31400264444 has 24 divisors (see below), whose sum is σ = 56539090608. Its totient is φ = 15250273920.

The previous prime is 31400264383. The next prime is 31400264449. The reversal of 31400264444 is 44446200413.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31400264444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400264449) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 473177 + ... + 535440.

It is an arithmetic number, because the mean of its divisors is an integer number (2355795442).

Almost surely, 2^31400264444 is an apocalyptic number.

It is an amenable number.

31400264444 is a deficient number, since it is larger than the sum of its proper divisors (25138826164).

31400264444 is a wasteful number, since it uses less digits than its factorization.

31400264444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008845 (or 1008843 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 31400264444 its reverse (44446200413), we get a palindrome (75846464857).

The spelling of 31400264444 in words is "thirty-one billion, four hundred million, two hundred sixty-four thousand, four hundred forty-four".