31436890244 has 12 divisors (see below), whose sum is σ = 55581719004. Its totient is φ = 15556399104.

The previous prime is 31436890241. The next prime is 31436890267. The reversal of 31436890244 is 44209863413.

It can be written as a sum of positive squares in 2 ways, for example, as 18411233344 + 13025656900 = 135688^2 + 114130^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 31436890195 and 31436890204.

It is not an unprimeable number, because it can be changed into a prime (31436890241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40511069 + ... + 40511844.

It is an arithmetic number, because the mean of its divisors is an integer number (4631809917).

Almost surely, 2^31436890244 is an apocalyptic number.

It is an amenable number.

31436890244 is a deficient number, since it is larger than the sum of its proper divisors (24144828760).

31436890244 is a wasteful number, since it uses less digits than its factorization.

31436890244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81023014 (or 81023012 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 31436890244 in words is "thirty-one billion, four hundred thirty-six million, eight hundred ninety thousand, two hundred forty-four".