31503404504 has 64 divisors (see below), whose sum is σ = 69660138240. Its totient is φ = 13167826560.

The previous prime is 31503404503. The next prime is 31503404563. The reversal of 31503404504 is 40540430513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31503404503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248519 + ... + 353225.

It is an arithmetic number, because the mean of its divisors is an integer number (1088439660).

Almost surely, 2^31503404504 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 31503404504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34830069120).

31503404504 is an abundant number, since it is smaller than the sum of its proper divisors (38156733736).

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

31503404504 is a wasteful number, since it uses less digits than its factorization.

31503404504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105000 (or 104996 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The spelling of 31503404504 in words is "thirty-one billion, five hundred three million, four hundred four thousand, five hundred four".