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132123031 = 177771943
BaseRepresentation
bin1111110000000…
…00100110010111
3100012121112201121
413320000212113
5232310414111
621035504411
73163012225
oct770004627
9305545647
10132123031
1168641a97
12382b8107
13214acc11
1413793b15
15b8ec871
hex7e00997

132123031 has 4 divisors (see below), whose sum is σ = 139894992. Its totient is φ = 124351072.

The previous prime is 132123001. The next prime is 132123059. The reversal of 132123031 is 130321231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130321231 = 671945093.

It is a cyclic number.

It is not a de Polignac number, because 132123031 - 29 = 132122519 is a prime.

It is a super-2 number, since 2×1321230312 = 34912990641253922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 132122996 and 132123014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132123001) 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, 3885955 + ... + 3885988.

It is an arithmetic number, because the mean of its divisors is an integer number (34973748).

Almost surely, 2132123031 is an apocalyptic number.

132123031 is a deficient number, since it is larger than the sum of its proper divisors (7771961).

132123031 is an equidigital number, since it uses as much as digits as its factorization.

132123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7771960.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 132123031 is about 11494.4782830714. The cubic root of 132123031 is about 509.3224772321.

Adding to 132123031 its reverse (130321231), we get a palindrome (262444262).

The spelling of 132123031 in words is "one hundred thirty-two million, one hundred twenty-three thousand, thirty-one".

Divisors: 1 17 7771943 132123031