31393271153 has 8 divisors (see below), whose sum is σ = 33248821320. Its totient is φ = 29538708480.

The previous prime is 31393271149. The next prime is 31393271191. The reversal of 31393271153 is 35117239313.

It can be written as a sum of positive squares in 4 ways, for example, as 19423160689 + 11970110464 = 139367^2 + 109408^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31393271153 - 2² = 31393271149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31393271123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180908 + ... + 309053.

It is an arithmetic number, because the mean of its divisors is an integer number (4156102665).

Almost surely, 2^31393271153 is an apocalyptic number.

It is an amenable number.

31393271153 is a deficient number, since it is larger than the sum of its proper divisors (1855550167).

31393271153 is a wasteful number, since it uses less digits than its factorization.

31393271153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493747.

The product of its digits is 51030, while the sum is 38.

The spelling of 31393271153 in words is "thirty-one billion, three hundred ninety-three million, two hundred seventy-one thousand, one hundred fifty-three".