65733131 has 2 divisors, whose sum is σ = 65733132. Its totient is φ = 65733130.

The previous prime is 65733121. The next prime is 65733167. The reversal of 65733131 is 13133756.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65733131 - 2¹⁸ = 65470987 is a prime.

It is a super-2 number, since 2×65733131² = 8641689022126322, 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 = 65733094 and 65733103.

It is not a weakly prime, because it can be changed into another prime (65733121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32866565 + 32866566.

It is an arithmetic number, because the mean of its divisors is an integer number (32866566).

Almost surely, 2^65733131 is an apocalyptic number.

65733131 is a deficient number, since it is larger than the sum of its proper divisors (1).

65733131 is an equidigital number, since it uses as much as digits as its factorization.

65733131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 29.

The square root of 65733131 is about 8107.5971162854. The cubic root of 65733131 is about 403.5785785471.

Adding to 65733131 its reverse (13133756), we get a palindrome (78866887).

The spelling of 65733131 in words is "sixty-five million, seven hundred thirty-three thousand, one hundred thirty-one".