65345831 has 2 divisors, whose sum is σ = 65345832. Its totient is φ = 65345830.

The previous prime is 65345801. The next prime is 65345843. The reversal of 65345831 is 13854356.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65345831 is a prime.

It is a super-2 number, since 2×65345831² = 8540155258161122, 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 = 65345791 and 65345800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65345801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32672915 + 32672916.

It is an arithmetic number, because the mean of its divisors is an integer number (32672916).

Almost surely, 2^65345831 is an apocalyptic number.

65345831 is a deficient number, since it is larger than the sum of its proper divisors (1).

65345831 is an equidigital number, since it uses as much as digits as its factorization.

65345831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 65345831 is about 8083.6768243170. The cubic root of 65345831 is about 402.7843875753.

The spelling of 65345831 in words is "sixty-five million, three hundred forty-five thousand, eight hundred thirty-one".