31503043312 has 20 divisors (see below), whose sum is σ = 65732311960. Its totient is φ = 14539866048.

The previous prime is 31503043283. The next prime is 31503043343. The reversal of 31503043312 is 21334030513.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75728262 + ... + 75728677.

It is an arithmetic number, because the mean of its divisors is an integer number (3286615598).

Almost surely, 2^31503043312 is an apocalyptic number.

It is an amenable number.

31503043312 is an abundant number, since it is smaller than the sum of its proper divisors (34229268648).

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

31503043312 is a wasteful number, since it uses less digits than its factorization.

31503043312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151456960 (or 151456954 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 31503043312 its reverse (21334030513), we get a palindrome (52837073825).

The spelling of 31503043312 in words is "thirty-one billion, five hundred three million, forty-three thousand, three hundred twelve".