131311073 has 2 divisors, whose sum is σ = 131311074. Its totient is φ = 131311072.

The previous prime is 131311057. The next prime is 131311099. The reversal of 131311073 is 370113131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94926049 + 36385024 = 9743^2 + 6032^2 .

It is a cyclic number.

It is not a de Polignac number, because 131311073 - 2⁴ = 131311057 is a prime.

It is a super-2 number, since 2×131311073² = 34485195784822658, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (131311273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65655536 + 65655537.

It is an arithmetic number, because the mean of its divisors is an integer number (65655537).

Almost surely, 2^131311073 is an apocalyptic number.

It is an amenable number.

131311073 is a deficient number, since it is larger than the sum of its proper divisors (1).

131311073 is an equidigital number, since it uses as much as digits as its factorization.

131311073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 131311073 is about 11459.1043716339. The cubic root of 131311073 is about 508.2769907872.

The spelling of 131311073 in words is "one hundred thirty-one million, three hundred eleven thousand, seventy-three".