64233131 has 2 divisors, whose sum is σ = 64233132. Its totient is φ = 64233130.

The previous prime is 64233107. The next prime is 64233133. The reversal of 64233131 is 13133246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64233131 is a prime.

It is a super-2 number, since 2×64233131² = 8251790236126322, which contains 22 as substring.

Together with 64233133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64233097 and 64233106.

It is not a weakly prime, because it can be changed into another prime (64233133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32116565 + 32116566.

It is an arithmetic number, because the mean of its divisors is an integer number (32116566).

Almost surely, 2^64233131 is an apocalyptic number.

64233131 is a deficient number, since it is larger than the sum of its proper divisors (1).

64233131 is an equidigital number, since it uses as much as digits as its factorization.

64233131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 23.

The square root of 64233131 is about 8014.5574425541. The cubic root of 64233131 is about 400.4851010380.

Adding to 64233131 its reverse (13133246), we get a palindrome (77366377).

The spelling of 64233131 in words is "sixty-four million, two hundred thirty-three thousand, one hundred thirty-one".