64731311 has 2 divisors, whose sum is σ = 64731312. Its totient is φ = 64731310.

The previous prime is 64731283. The next prime is 64731341. The reversal of 64731311 is 11313746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64731311 - 2¹⁰ = 64730287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64731341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32365655 + 32365656.

It is an arithmetic number, because the mean of its divisors is an integer number (32365656).

Almost surely, 2^64731311 is an apocalyptic number.

64731311 is a deficient number, since it is larger than the sum of its proper divisors (1).

64731311 is an equidigital number, since it uses as much as digits as its factorization.

64731311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 64731311 is about 8045.5771079519. The cubic root of 64731311 is about 401.5177980217.

The spelling of 64731311 in words is "sixty-four million, seven hundred thirty-one thousand, three hundred eleven".