31555054313 has 8 divisors (see below), whose sum is σ = 31709179080. Its totient is φ = 31401072000.

The previous prime is 31555054301. The next prime is 31555054319. The reversal of 31555054313 is 31345055513.

It can be written as a sum of positive squares in 4 ways, for example, as 150544 + 31554903769 = 388^2 + 177637^2 .

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 31555054313 - 2⁶ = 31555054249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31555054319) 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, 422813 + ... + 491813.

It is an arithmetic number, because the mean of its divisors is an integer number (3963647385).

Almost surely, 2^31555054313 is an apocalyptic number.

It is an amenable number.

31555054313 is a deficient number, since it is larger than the sum of its proper divisors (154124767).

31555054313 is a wasteful number, since it uses less digits than its factorization.

31555054313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71227.

The product of its (nonzero) digits is 67500, while the sum is 35.

The spelling of 31555054313 in words is "thirty-one billion, five hundred fifty-five million, fifty-four thousand, three hundred thirteen".