31860687274159 has 2 divisors, whose sum is σ = 31860687274160. Its totient is φ = 31860687274158.

The previous prime is 31860687274043. The next prime is 31860687274261. The reversal of 31860687274159 is 95147278606813.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31860687274159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31860687274094 and 31860687274103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31860687244159) 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 as a sum of consecutive naturals, namely, 15930343637079 + 15930343637080.

It is an arithmetic number, because the mean of its divisors is an integer number (15930343637080).

It is a 1-persistent number, because it is pandigital, but 2⋅31860687274159 = 63721374548318 is not.

Almost surely, 2^{31860687274159} is an apocalyptic number.

31860687274159 is a deficient number, since it is larger than the sum of its proper divisors (1).

31860687274159 is an equidigital number, since it uses as much as digits as its factorization.

31860687274159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 121927680, while the sum is 67.

The spelling of 31860687274159 in words is "thirty-one trillion, eight hundred sixty billion, six hundred eighty-seven million, two hundred seventy-four thousand, one hundred fifty-nine".