31003402432 has 14 divisors (see below), whose sum is σ = 61522376828. Its totient is φ = 15501701184.

The previous prime is 31003402387. The next prime is 31003402459. The reversal of 31003402432 is 23420430013.

It is a happy number.

It is a super-2 number, since 2×31003402432² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242214018 + ... + 242214145.

Almost surely, 2^31003402432 is an apocalyptic number.

31003402432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31003402432 is a deficient number, since it is larger than the sum of its proper divisors (30518974396).

31003402432 is an equidigital number, since it uses as much as digits as its factorization.

31003402432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484428175 (or 484428165 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 31003402432 its reverse (23420430013), we get a palindrome (54423832445).

The spelling of 31003402432 in words is "thirty-one billion, three million, four hundred two thousand, four hundred thirty-two".