31286144158313 has 32 divisors (see below), whose sum is σ = 35949890196480. Its totient is φ = 26927597880000.

The previous prime is 31286144158097. The next prime is 31286144158331. The reversal of 31286144158313 is 31385144168213.

It is a cyclic number.

It is not a de Polignac number, because 31286144158313 - 2⁸ = 31286144158057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31286144158013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3441436898 + ... + 3441445988.

It is an arithmetic number, because the mean of its divisors is an integer number (1123434068640).

Almost surely, 2^{31286144158313} is an apocalyptic number.

It is an amenable number.

31286144158313 is a deficient number, since it is larger than the sum of its proper divisors (4663746038167).

31286144158313 is a wasteful number, since it uses less digits than its factorization.

31286144158313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17949.

The product of its digits is 1658880, while the sum is 50.

The spelling of 31286144158313 in words is "thirty-one trillion, two hundred eighty-six billion, one hundred forty-four million, one hundred fifty-eight thousand, three hundred thirteen".