123739431732 has 96 divisors (see below), whose sum is σ = 378462371840. Its totient is φ = 34213661280.

The previous prime is 123739431707. The next prime is 123739431737. The reversal of 123739431732 is 237134937321.

It is a super-2 number, since 2×123739431732² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123739431737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2616508 + ... + 2663379.

Almost surely, 2^123739431732 is an apocalyptic number.

123739431732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123739431732 is an abundant number, since it is smaller than the sum of its proper divisors (254722940108).

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

123739431732 is a wasteful number, since it uses less digits than its factorization.

123739431732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5279938 (or 5279930 counting only the distinct ones).

The product of its digits is 571536, while the sum is 45.

The spelling of 123739431732 in words is "one hundred twenty-three billion, seven hundred thirty-nine million, four hundred thirty-one thousand, seven hundred thirty-two".