76508431 has 2 divisors, whose sum is σ = 76508432. Its totient is φ = 76508430.

The previous prime is 76508429. The next prime is 76508437. The reversal of 76508431 is 13480567.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76508431 - 2¹ = 76508429 is a prime.

It is a super-4 number, since 4×76508431⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

Together with 76508429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76508437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38254215 + 38254216.

It is an arithmetic number, because the mean of its divisors is an integer number (38254216).

Almost surely, 2^76508431 is an apocalyptic number.

76508431 is a deficient number, since it is larger than the sum of its proper divisors (1).

76508431 is an equidigital number, since it uses as much as digits as its factorization.

76508431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 76508431 is about 8746.9097971798. The cubic root of 76508431 is about 424.5248318000.

Adding to 76508431 its reverse (13480567), we get a palindrome (89988998).

The spelling of 76508431 in words is "seventy-six million, five hundred eight thousand, four hundred thirty-one".