31544510412 has 96 divisors (see below), whose sum is σ = 82159902720. Its totient is φ = 9373224960.

The previous prime is 31544510411. The next prime is 31544510441. The reversal of 31544510412 is 21401544513.

It is a super-2 number, since 2×31544510412² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31544510412.

It is not an unprimeable number, because it can be changed into a prime (31544510411) by changing a digit.

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, 244164 + ... + 350292.

It is an arithmetic number, because the mean of its divisors is an integer number (855832320).

Almost surely, 2^31544510412 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 31544510412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41079951360).

31544510412 is an abundant number, since it is smaller than the sum of its proper divisors (50615392308).

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

31544510412 is a wasteful number, since it uses less digits than its factorization.

31544510412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106231 (or 106229 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 31544510412 in words is "thirty-one billion, five hundred forty-four million, five hundred ten thousand, four hundred twelve".