123045431232 has 56 divisors (see below), whose sum is σ = 342692329600. Its totient is φ = 38856450816.

The previous prime is 123045431189. The next prime is 123045431287. The reversal of 123045431232 is 232134540321.

It is a self number, because there is not a number n which added to its sum of digits gives 123045431232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16861132 + ... + 16868427.

Almost surely, 2^123045431232 is an apocalyptic number.

123045431232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123045431232 is an abundant number, since it is smaller than the sum of its proper divisors (219646898368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123045431232 is a wasteful number, since it uses less digits than its factorization.

123045431232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33729593 (or 33729583 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 123045431232 its reverse (232134540321), we get a palindrome (355179971553).

The spelling of 123045431232 in words is "one hundred twenty-three billion, forty-five million, four hundred thirty-one thousand, two hundred thirty-two".