76220431 has 16 divisors (see below), whose sum is σ = 89294400. Its totient is φ = 65032800.

The previous prime is 76220429. The next prime is 76220479. The reversal of 76220431 is 13402267.

It is not a de Polignac number, because 76220431 - 2¹ = 76220429 is a prime.

It is a super-2 number, since 2×76220431² = 11619108203651522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76220396 and 76220405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76220411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108381 + ... + 109081.

It is an arithmetic number, because the mean of its divisors is an integer number (5580900).

Almost surely, 2^76220431 is an apocalyptic number.

76220431 is a deficient number, since it is larger than the sum of its proper divisors (13073969).

76220431 is an equidigital number, since it uses as much as digits as its factorization.

76220431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 76220431 is about 8730.4313180965. The cubic root of 76220431 is about 423.9914836755.

Adding to 76220431 its reverse (13402267), we get a palindrome (89622698).

The spelling of 76220431 in words is "seventy-six million, two hundred twenty thousand, four hundred thirty-one".