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1232110231 = 11112010021
BaseRepresentation
bin100100101110000…
…1000001010010111
310011212102200111021
41021130020022113
510010410011411
6322132222011
742350523052
oct11134101227
93155380437
101232110231
11582548720
122a476a907
13168357b11
14b98cba99
157327ea71
hex49708297

1232110231 has 4 divisors (see below), whose sum is σ = 1344120264. Its totient is φ = 1120100200.

The previous prime is 1232110223. The next prime is 1232110237. The reversal of 1232110231 is 1320112321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1320112321 = 11120010211.

It is a cyclic number.

It is not a de Polignac number, because 1232110231 - 23 = 1232110223 is a prime.

It is a super-2 number, since 2×12321102312 = 3036191242669746722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232110237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56005000 + ... + 56005021.

It is an arithmetic number, because the mean of its divisors is an integer number (336030066).

Almost surely, 21232110231 is an apocalyptic number.

1232110231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1232110231 is a deficient number, since it is larger than the sum of its proper divisors (112010033).

1232110231 is a wasteful number, since it uses less digits than its factorization.

1232110231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112010032.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1232110231 is about 35101.4277629842. The cubic root of 1232110231 is about 1072.0536536481.

Adding to 1232110231 its reverse (1320112321), we get a palindrome (2552222552).

The spelling of 1232110231 in words is "one billion, two hundred thirty-two million, one hundred ten thousand, two hundred thirty-one".

Divisors: 1 11 112010021 1232110231