65241931 has 2 divisors, whose sum is σ = 65241932. Its totient is φ = 65241930.

The previous prime is 65241893. The next prime is 65241941. The reversal of 65241931 is 13914256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65241931 - 2⁹ = 65241419 is a prime.

It is a super-2 number, since 2×65241931² = 8513019121217522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65241893 and 65241902.

It is not a weakly prime, because it can be changed into another prime (65241941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32620965 + 32620966.

It is an arithmetic number, because the mean of its divisors is an integer number (32620966).

Almost surely, 2^65241931 is an apocalyptic number.

65241931 is the 5109-th centered pentagonal number.

65241931 is a deficient number, since it is larger than the sum of its proper divisors (1).

65241931 is an equidigital number, since it uses as much as digits as its factorization.

65241931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 31.

The square root of 65241931 is about 8077.2477366984. The cubic root of 65241931 is about 402.5707983430.

The spelling of 65241931 in words is "sixty-five million, two hundred forty-one thousand, nine hundred thirty-one".