250401331 has 2 divisors, whose sum is σ = 250401332. Its totient is φ = 250401330.

The previous prime is 250401301. The next prime is 250401367. The reversal of 250401331 is 133104052.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250401331 is a prime.

It is a super-2 number, since 2×250401331² = 125401653133143122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 250401299 and 250401308.

It is not a weakly prime, because it can be changed into another prime (250401301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125200665 + 125200666.

It is an arithmetic number, because the mean of its divisors is an integer number (125200666).

Almost surely, 2^250401331 is an apocalyptic number.

250401331 is a deficient number, since it is larger than the sum of its proper divisors (1).

250401331 is an equidigital number, since it uses as much as digits as its factorization.

250401331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 250401331 is about 15824.0744121102. The cubic root of 250401331 is about 630.2974416415.

Adding to 250401331 its reverse (133104052), we get a palindrome (383505383).

The spelling of 250401331 in words is "two hundred fifty million, four hundred one thousand, three hundred thirty-one".