256063331 has 4 divisors (see below), whose sum is σ = 256100952. Its totient is φ = 256025712.

The previous prime is 256063321. The next prime is 256063349. The reversal of 256063331 is 133360652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256063331 - 2⁶ = 256063267 is a prime.

It is a super-2 number, since 2×256063331² = 131136858965631122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256063294 and 256063303.

It is not an unprimeable number, because it can be changed into a prime (256063321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5426 + ... + 23271.

It is an arithmetic number, because the mean of its divisors is an integer number (64025238).

Almost surely, 2^256063331 is an apocalyptic number.

256063331 is a deficient number, since it is larger than the sum of its proper divisors (37621).

256063331 is an equidigital number, since it uses as much as digits as its factorization.

256063331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37620.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 256063331 is about 16001.9789713648. The cubic root of 256063331 is about 635.0127767285.

The spelling of 256063331 in words is "two hundred fifty-six million, sixty-three thousand, three hundred thirty-one".