64703131 has 2 divisors, whose sum is σ = 64703132. Its totient is φ = 64703130.

The previous prime is 64703123. The next prime is 64703137. The reversal of 64703131 is 13130746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64703131 - 2³ = 64703123 is a prime.

It is a super-2 number, since 2×64703131² = 8372990322406322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64703096 and 64703105.

It is not a weakly prime, because it can be changed into another prime (64703137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32351565 + 32351566.

It is an arithmetic number, because the mean of its divisors is an integer number (32351566).

Almost surely, 2^64703131 is an apocalyptic number.

64703131 is a deficient number, since it is larger than the sum of its proper divisors (1).

64703131 is an equidigital number, since it uses as much as digits as its factorization.

64703131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 64703131 is about 8043.8256445550. The cubic root of 64703131 is about 401.4595242452.

Adding to 64703131 its reverse (13130746), we get a palindrome (77833877).

The spelling of 64703131 in words is "sixty-four million, seven hundred three thousand, one hundred thirty-one".