2131031009959 has 2 divisors, whose sum is σ = 2131031009960. Its totient is φ = 2131031009958.

The previous prime is 2131031009953. The next prime is 2131031010013. The reversal of 2131031009959 is 9599001301312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131031009959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131031009953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065515504979 + 1065515504980.

It is an arithmetic number, because the mean of its divisors is an integer number (1065515504980).

Almost surely, 2^{2131031009959} is an apocalyptic number.

2131031009959 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131031009959 is an equidigital number, since it uses as much as digits as its factorization.

2131031009959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65610, while the sum is 43.

The spelling of 2131031009959 in words is "two trillion, one hundred thirty-one billion, thirty-one million, nine thousand, nine hundred fifty-nine".