31031003472 has 160 divisors (see below), whose sum is σ = 98683207680. Its totient is φ = 8206894080.

The previous prime is 31031003467. The next prime is 31031003483. The reversal of 31031003472 is 27430013013.

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

It is a congruent number.

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 in 31 ways as a sum of consecutive naturals, for example, 174804 + ... + 304332.

It is an arithmetic number, because the mean of its divisors is an integer number (616770048).

Almost surely, 2^31031003472 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 31031003472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49341603840).

31031003472 is an abundant number, since it is smaller than the sum of its proper divisors (67652204208).

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

31031003472 is a wasteful number, since it uses less digits than its factorization.

31031003472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129601 (or 129595 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

Adding to 31031003472 its reverse (27430013013), we get a palindrome (58461016485).

The spelling of 31031003472 in words is "thirty-one billion, thirty-one million, three thousand, four hundred seventy-two".