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13232033231 = 28229468739
BaseRepresentation
bin11000101001011000…
…01100110111001111
31021011011101221012212
430110230030313033
5204044400030411
610025000221035
7645621266234
oct142454146717
937134357185
1013232033231
11568015745a
12269346a77b
13132b493581
148d74c978b
155269d768b
hex314b0cdcf

13232033231 has 4 divisors (see below), whose sum is σ = 13232530200. Its totient is φ = 13231536264.

The previous prime is 13232033153. The next prime is 13232033237. The reversal of 13232033231 is 13233023231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13232033231 - 218 = 13231771087 is a prime.

It is a super-2 number, since 2×132320332312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13232033197 and 13232033206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13232033237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206141 + ... + 262598.

It is an arithmetic number, because the mean of its divisors is an integer number (3308132550).

Almost surely, 213232033231 is an apocalyptic number.

13232033231 is a deficient number, since it is larger than the sum of its proper divisors (496969).

13232033231 is an equidigital number, since it uses as much as digits as its factorization.

13232033231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496968.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 13232033231 its reverse (13233023231), we get a palindrome (26465056462).

The spelling of 13232033231 in words is "thirteen billion, two hundred thirty-two million, thirty-three thousand, two hundred thirty-one".

Divisors: 1 28229 468739 13232033231