65728031 has 2 divisors, whose sum is σ = 65728032. Its totient is φ = 65728030.

The previous prime is 65727983. The next prime is 65728057. The reversal of 65728031 is 13082756.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65728031 is a prime.

It is a super-2 number, since 2×65728031² = 8640348118273922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65728081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32864015 + 32864016.

It is an arithmetic number, because the mean of its divisors is an integer number (32864016).

Almost surely, 2^65728031 is an apocalyptic number.

65728031 is a deficient number, since it is larger than the sum of its proper divisors (1).

65728031 is an equidigital number, since it uses as much as digits as its factorization.

65728031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 65728031 is about 8107.2825903628. The cubic root of 65728031 is about 403.5681408680.

The spelling of 65728031 in words is "sixty-five million, seven hundred twenty-eight thousand, thirty-one".