31411293856 has 96 divisors (see below), whose sum is σ = 69568586640. Its totient is φ = 13886078976.

The previous prime is 31411293853. The next prime is 31411293869. The reversal of 31411293856 is 65839211413.

It can be written as a sum of positive squares in 8 ways, for example, as 27377011600 + 4034282256 = 165460^2 + 63516^2 .

It is not an unprimeable number, because it can be changed into a prime (31411293853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556806 + ... + 610618.

Almost surely, 2^31411293856 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 31411293856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34784293320).

31411293856 is an abundant number, since it is smaller than the sum of its proper divisors (38157292784).

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

31411293856 is a wasteful number, since it uses less digits than its factorization.

31411293856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53906 (or 53898 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The spelling of 31411293856 in words is "thirty-one billion, four hundred eleven million, two hundred ninety-three thousand, eight hundred fifty-six".