245236931 has 2 divisors, whose sum is σ = 245236932. Its totient is φ = 245236930.

The previous prime is 245236921. The next prime is 245236961. The reversal of 245236931 is 139632542.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245236931 is a prime.

It is a super-2 number, since 2×245236931² = 120282304652597522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245236891 and 245236900.

It is not a weakly prime, because it can be changed into another prime (245236921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122618465 + 122618466.

It is an arithmetic number, because the mean of its divisors is an integer number (122618466).

Almost surely, 2^245236931 is an apocalyptic number.

245236931 is a deficient number, since it is larger than the sum of its proper divisors (1).

245236931 is an equidigital number, since it uses as much as digits as its factorization.

245236931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 35.

The square root of 245236931 is about 15660.0424967495. The cubic root of 245236931 is about 625.9341176366.

The spelling of 245236931 in words is "two hundred forty-five million, two hundred thirty-six thousand, nine hundred thirty-one".