2531982361 has 2 divisors, whose sum is σ = 2531982362. Its totient is φ = 2531982360.

The previous prime is 2531982353. The next prime is 2531982379. The reversal of 2531982361 is 1632891352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2416312336 + 115670025 = 49156^2 + 10755^2 .

It is a cyclic number.

It is not a de Polignac number, because 2531982361 - 2³ = 2531982353 is a prime.

It is not a weakly prime, because it can be changed into another prime (2531982961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265991180 + 1265991181.

It is an arithmetic number, because the mean of its divisors is an integer number (1265991181).

Almost surely, 2^2531982361 is an apocalyptic number.

It is an amenable number.

2531982361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531982361 is an equidigital number, since it uses as much as digits as its factorization.

2531982361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 2531982361 is about 50318.8072295042. The cubic root of 2531982361 is about 1362.9718678271.

The spelling of 2531982361 in words is "two billion, five hundred thirty-one million, nine hundred eighty-two thousand, three hundred sixty-one".