31404400445 has 16 divisors (see below), whose sum is σ = 42898660992. Its totient is φ = 21846538560.

The previous prime is 31404400409. The next prime is 31404400463. The reversal of 31404400445 is 54400440413.

It is not a de Polignac number, because 31404400445 - 2⁶ = 31404400381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12411542 + ... + 12414071.

It is an arithmetic number, because the mean of its divisors is an integer number (2681166312).

Almost surely, 2^31404400445 is an apocalyptic number.

It is an amenable number.

31404400445 is a deficient number, since it is larger than the sum of its proper divisors (11494260547).

31404400445 is a wasteful number, since it uses less digits than its factorization.

31404400445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24825652.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 31404400445 its reverse (54400440413), we get a palindrome (85804840858).

The spelling of 31404400445 in words is "thirty-one billion, four hundred four million, four hundred thousand, four hundred forty-five".