764423131 has 2 divisors, whose sum is σ = 764423132. Its totient is φ = 764423130.

The previous prime is 764423129. The next prime is 764423159. The reversal of 764423131 is 131324467.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 764423131 - 2¹ = 764423129 is a prime.

It is a super-2 number, since 2×764423131² = 1168685446415686322, which contains 22 as substring.

Together with 764423129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 764423093 and 764423102.

It is not a weakly prime, because it can be changed into another prime (764423171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382211565 + 382211566.

It is an arithmetic number, because the mean of its divisors is an integer number (382211566).

Almost surely, 2^764423131 is an apocalyptic number.

764423131 is a deficient number, since it is larger than the sum of its proper divisors (1).

764423131 is an equidigital number, since it uses as much as digits as its factorization.

764423131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 764423131 is about 27648.2030338321. The cubic root of 764423131 is about 914.3474822632.

Adding to 764423131 its reverse (131324467), we get a palindrome (895747598).

The spelling of 764423131 in words is "seven hundred sixty-four million, four hundred twenty-three thousand, one hundred thirty-one".