256349411 has 2 divisors, whose sum is σ = 256349412. Its totient is φ = 256349410.

The previous prime is 256349399. The next prime is 256349419. The reversal of 256349411 is 114943652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256349411 - 2⁶ = 256349347 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (256349419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128174705 + 128174706.

It is an arithmetic number, because the mean of its divisors is an integer number (128174706).

Almost surely, 2^256349411 is an apocalyptic number.

256349411 is a deficient number, since it is larger than the sum of its proper divisors (1).

256349411 is an equidigital number, since it uses as much as digits as its factorization.

256349411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 256349411 is about 16010.9153704590. The cubic root of 256349411 is about 635.2491724711.

It can be divided in two parts, 25 and 6349411, that added together give a palindrome (6349436).

The spelling of 256349411 in words is "two hundred fifty-six million, three hundred forty-nine thousand, four hundred eleven".