2531951 has 2 divisors, whose sum is σ = 2531952. Its totient is φ = 2531950.

The previous prime is 2531923. The next prime is 2531981. The reversal of 2531951 is 1591352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2531951 - 2¹⁸ = 2269807 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2531951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2531981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265975 + 1265976.

It is an arithmetic number, because the mean of its divisors is an integer number (1265976).

2^2531951 is an apocalyptic number.

2531951 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531951 is an equidigital number, since it uses as much as digits as its factorization.

2531951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350, while the sum is 26.

The square root of 2531951 is about 1591.2105454653. The cubic root of 2531951 is about 136.2966240571.

The spelling of 2531951 in words is "two million, five hundred thirty-one thousand, nine hundred fifty-one".