31400244344 has 32 divisors (see below), whose sum is σ = 68389298400. Its totient is φ = 13236635520.

The previous prime is 31400244307. The next prime is 31400244401. The reversal of 31400244344 is 44344200413.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4592639 + ... + 4599470.

It is an arithmetic number, because the mean of its divisors is an integer number (2137165575).

Almost surely, 2^31400244344 is an apocalyptic number.

It is an amenable number.

31400244344 is an abundant number, since it is smaller than the sum of its proper divisors (36989054056).

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

31400244344 is a wasteful number, since it uses less digits than its factorization.

31400244344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9192183 (or 9192179 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 31400244344 its reverse (44344200413), we get a palindrome (75744444757).

The spelling of 31400244344 in words is "thirty-one billion, four hundred million, two hundred forty-four thousand, three hundred forty-four".