31004412432 has 160 divisors (see below), whose sum is σ = 92559790080. Its totient is φ = 8759992320.

The previous prime is 31004412431. The next prime is 31004412449. The reversal of 31004412432 is 23421440013.

It is a super-2 number, since 2×31004412432² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (31004412431) 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, 11606457 + ... + 11609127.

It is an arithmetic number, because the mean of its divisors is an integer number (578498688).

Almost surely, 2^31004412432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31004412432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46279895040).

31004412432 is an abundant number, since it is smaller than the sum of its proper divisors (61555377648).

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

31004412432 is a wasteful number, since it uses less digits than its factorization.

31004412432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061 (or 3055 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31004412432 its reverse (23421440013), we get a palindrome (54425852445).

The spelling of 31004412432 in words is "thirty-one billion, four million, four hundred twelve thousand, four hundred thirty-two".