76304431 has 4 divisors (see below), whose sum is σ = 87205072. Its totient is φ = 65403792.

The previous prime is 76304429. The next prime is 76304447. The reversal of 76304431 is 13440367.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13440367 = 103 ⋅130489.

It is a cyclic number.

It is not a de Polignac number, because 76304431 - 2¹ = 76304429 is a prime.

It is a super-2 number, since 2×76304431² = 11644732380467522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76304431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76304411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5450310 + ... + 5450323.

It is an arithmetic number, because the mean of its divisors is an integer number (21801268).

Almost surely, 2^76304431 is an apocalyptic number.

76304431 is a deficient number, since it is larger than the sum of its proper divisors (10900641).

76304431 is a wasteful number, since it uses less digits than its factorization.

76304431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10900640.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 76304431 is about 8735.2407522632. The cubic root of 76304431 is about 424.1471821267.

Adding to 76304431 its reverse (13440367), we get a palindrome (89744798).

The spelling of 76304431 in words is "seventy-six million, three hundred four thousand, four hundred thirty-one".