131322202997 has 2 divisors, whose sum is σ = 131322202998. Its totient is φ = 131322202996.

The previous prime is 131322202969. The next prime is 131322203071. The reversal of 131322202997 is 799202223131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118188813796 + 13133389201 = 343786^2 + 114601^2 .

It is a cyclic number.

It is not a de Polignac number, because 131322202997 - 2⁶ = 131322202933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131322202927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65661101498 + 65661101499.

It is an arithmetic number, because the mean of its divisors is an integer number (65661101499).

Almost surely, 2^131322202997 is an apocalyptic number.

It is an amenable number.

131322202997 is a deficient number, since it is larger than the sum of its proper divisors (1).

131322202997 is an equidigital number, since it uses as much as digits as its factorization.

131322202997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The spelling of 131322202997 in words is "one hundred thirty-one billion, three hundred twenty-two million, two hundred two thousand, nine hundred ninety-seven".