31155231059 has 2 divisors, whose sum is σ = 31155231060. Its totient is φ = 31155231058.

The previous prime is 31155231001. The next prime is 31155231113. The reversal of 31155231059 is 95013255113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31155231059 is a prime.

It is a super-2 number, since 2×31155231059² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31155230059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15577615529 + 15577615530.

It is an arithmetic number, because the mean of its divisors is an integer number (15577615530).

Almost surely, 2^31155231059 is an apocalyptic number.

31155231059 is a deficient number, since it is larger than the sum of its proper divisors (1).

31155231059 is an equidigital number, since it uses as much as digits as its factorization.

31155231059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250, while the sum is 35.

The spelling of 31155231059 in words is "thirty-one billion, one hundred fifty-five million, two hundred thirty-one thousand, fifty-nine".