253501931 has 2 divisors, whose sum is σ = 253501932. Its totient is φ = 253501930.

The previous prime is 253501907. The next prime is 253501949. The reversal of 253501931 is 139105352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253501931 - 2¹⁸ = 253239787 is a prime.

It is a super-2 number, since 2×253501931² = 128526458041457522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 253501894 and 253501903.

It is not a weakly prime, because it can be changed into another prime (253501961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126750965 + 126750966.

It is an arithmetic number, because the mean of its divisors is an integer number (126750966).

Almost surely, 2^253501931 is an apocalyptic number.

253501931 is a deficient number, since it is larger than the sum of its proper divisors (1).

253501931 is an equidigital number, since it uses as much as digits as its factorization.

253501931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 253501931 is about 15921.7439685482. The cubic root of 253501931 is about 632.8883342795. Note that the first 3 decimals are identical.

The spelling of 253501931 in words is "two hundred fifty-three million, five hundred one thousand, nine hundred thirty-one".