31266904473993 has 16 divisors (see below), whose sum is σ = 41976853133312. Its totient is φ = 20700855450000.

The previous prime is 31266904473947. The next prime is 31266904474009. The reversal of 31266904473993 is 39937440966213.

It is not a de Polignac number, because 31266904473993 - 2⁸ = 31266904473737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31266904473293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7859683 + ... + 11149368.

It is an arithmetic number, because the mean of its divisors is an integer number (2623553320832).

Almost surely, 2^{31266904473993} is an apocalyptic number.

It is an amenable number.

31266904473993 is a deficient number, since it is larger than the sum of its proper divisors (10709948659319).

31266904473993 is a wasteful number, since it uses less digits than its factorization.

31266904473993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19012836.

The product of its (nonzero) digits is 158723712, while the sum is 66.

The spelling of 31266904473993 in words is "thirty-one trillion, two hundred sixty-six billion, nine hundred four million, four hundred seventy-three thousand, nine hundred ninety-three".