250681313 has 2 divisors, whose sum is σ = 250681314. Its totient is φ = 250681312.

The previous prime is 250681309. The next prime is 250681351. The reversal of 250681313 is 313186052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233233984 + 17447329 = 15272^2 + 4177^2 .

It is a cyclic number.

It is not a de Polignac number, because 250681313 - 2² = 250681309 is a prime.

It is a super-2 number, since 2×250681313² = 125682241374807938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (250681373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125340656 + 125340657.

It is an arithmetic number, because the mean of its divisors is an integer number (125340657).

Almost surely, 2^250681313 is an apocalyptic number.

It is an amenable number.

250681313 is a deficient number, since it is larger than the sum of its proper divisors (1).

250681313 is an equidigital number, since it uses as much as digits as its factorization.

250681313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 250681313 is about 15832.9186507100. The cubic root of 250681313 is about 630.5322729359.

The spelling of 250681313 in words is "two hundred fifty million, six hundred eighty-one thousand, three hundred thirteen".