2581242331 has 2 divisors, whose sum is σ = 2581242332. Its totient is φ = 2581242330.

The previous prime is 2581242319. The next prime is 2581242343. The reversal of 2581242331 is 1332421852.

It is a balanced prime because it is at equal distance from previous prime (2581242319) and next prime (2581242343).

It is a cyclic number.

It is not a de Polignac number, because 2581242331 - 2⁷ = 2581242203 is a prime.

It is a super-2 number, since 2×2581242331² = 13325623942692627122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2581242293 and 2581242302.

It is not a weakly prime, because it can be changed into another prime (2581242031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290621165 + 1290621166.

It is an arithmetic number, because the mean of its divisors is an integer number (1290621166).

Almost surely, 2^2581242331 is an apocalyptic number.

2581242331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2581242331 is an equidigital number, since it uses as much as digits as its factorization.

2581242331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 2581242331 is about 50805.9281088339. The cubic root of 2581242331 is about 1371.7540767605.

The spelling of 2581242331 in words is "two billion, five hundred eighty-one million, two hundred forty-two thousand, three hundred thirty-one".