258151631 has 2 divisors, whose sum is σ = 258151632. Its totient is φ = 258151630.

The previous prime is 258151571. The next prime is 258151633. The reversal of 258151631 is 136151852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 258151631 - 2¹⁸ = 257889487 is a prime.

It is a super-2 number, since 2×258151631² = 133284529175920322, which contains 22 as substring.

Together with 258151633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258151633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129075815 + 129075816.

It is an arithmetic number, because the mean of its divisors is an integer number (129075816).

Almost surely, 2^258151631 is an apocalyptic number.

258151631 is a deficient number, since it is larger than the sum of its proper divisors (1).

258151631 is an equidigital number, since it uses as much as digits as its factorization.

258151631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 32.

The square root of 258151631 is about 16067.0977777569. The cubic root of 258151631 is about 636.7343670717.

The spelling of 258151631 in words is "two hundred fifty-eight million, one hundred fifty-one thousand, six hundred thirty-one".