2531136973 has 2 divisors, whose sum is σ = 2531136974. Its totient is φ = 2531136972.

The previous prime is 2531136947. The next prime is 2531136997. The reversal of 2531136973 is 3796311352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2460358404 + 70778569 = 49602^2 + 8413^2 .

It is a cyclic number.

It is not a de Polignac number, because 2531136973 - 2²⁵ = 2497582541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2531146973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265568486 + 1265568487.

It is an arithmetic number, because the mean of its divisors is an integer number (1265568487).

Almost surely, 2^2531136973 is an apocalyptic number.

It is an amenable number.

2531136973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531136973 is an equidigital number, since it uses as much as digits as its factorization.

2531136973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 40.

The square root of 2531136973 is about 50310.4062098489. The cubic root of 2531136973 is about 1362.8201595134.

The spelling of 2531136973 in words is "two billion, five hundred thirty-one million, one hundred thirty-six thousand, nine hundred seventy-three".