256452331 has 2 divisors, whose sum is σ = 256452332. Its totient is φ = 256452330.

The previous prime is 256452299. The next prime is 256452347. The reversal of 256452331 is 133254652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256452331 - 2⁵ = 256452299 is a prime.

It is a super-2 number, since 2×256452331² = 131535596150667122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256452293 and 256452302.

It is not a weakly prime, because it can be changed into another prime (256452631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128226165 + 128226166.

It is an arithmetic number, because the mean of its divisors is an integer number (128226166).

Almost surely, 2^256452331 is an apocalyptic number.

256452331 is a deficient number, since it is larger than the sum of its proper divisors (1).

256452331 is an equidigital number, since it uses as much as digits as its factorization.

256452331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 31.

The square root of 256452331 is about 16014.1291052620. The cubic root of 256452331 is about 635.3341750682.

The spelling of 256452331 in words is "two hundred fifty-six million, four hundred fifty-two thousand, three hundred thirty-one".