31672457705 has 16 divisors (see below), whose sum is σ = 43441806720. Its totient is φ = 21715610112.

The previous prime is 31672457701. The next prime is 31672457731. The reversal of 31672457705 is 50775427613.

It is a happy number.

It is not a de Polignac number, because 31672457705 - 2² = 31672457701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31672457705.

It is not an unprimeable number, because it can be changed into a prime (31672457701) by changing a digit.

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, 261842 + ... + 363188.

It is an arithmetic number, because the mean of its divisors is an integer number (2715112920).

Almost surely, 2^31672457705 is an apocalyptic number.

31672457705 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31672457705 is a deficient number, since it is larger than the sum of its proper divisors (11769349015).

31672457705 is a wasteful number, since it uses less digits than its factorization.

31672457705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110288.

The product of its (nonzero) digits is 1234800, while the sum is 47.

The spelling of 31672457705 in words is "thirty-one billion, six hundred seventy-two million, four hundred fifty-seven thousand, seven hundred five".