131213031073 has 2 divisors, whose sum is σ = 131213031074. Its totient is φ = 131213031072.

The previous prime is 131213031067. The next prime is 131213031139. The reversal of 131213031073 is 370130312131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95367939489 + 35845091584 = 308817^2 + 189328^2 .

It is a cyclic number.

It is not a de Polignac number, because 131213031073 - 2⁵ = 131213031041 is a prime.

It is not a weakly prime, because it can be changed into another prime (131213031373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65606515536 + 65606515537.

It is an arithmetic number, because the mean of its divisors is an integer number (65606515537).

Almost surely, 2^131213031073 is an apocalyptic number.

It is an amenable number.

131213031073 is a deficient number, since it is larger than the sum of its proper divisors (1).

131213031073 is an equidigital number, since it uses as much as digits as its factorization.

131213031073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 25.

The spelling of 131213031073 in words is "one hundred thirty-one billion, two hundred thirteen million, thirty-one thousand, seventy-three".