254728931 has 2 divisors, whose sum is σ = 254728932. Its totient is φ = 254728930.

The previous prime is 254728919. The next prime is 254728937. The reversal of 254728931 is 139827452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254728931 is a prime.

It is a super-2 number, since 2×254728931² = 129773656576805522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (254728937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127364465 + 127364466.

It is an arithmetic number, because the mean of its divisors is an integer number (127364466).

Almost surely, 2^254728931 is an apocalyptic number.

254728931 is a deficient number, since it is larger than the sum of its proper divisors (1).

254728931 is an equidigital number, since it uses as much as digits as its factorization.

254728931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 254728931 is about 15960.2296662673. The cubic root of 254728931 is about 633.9077932492.

The spelling of 254728931 in words is "two hundred fifty-four million, seven hundred twenty-eight thousand, nine hundred thirty-one".