74308131 has 8 divisors (see below), whose sum is σ = 110086160. Its totient is φ = 49538736.

The previous prime is 74308123. The next prime is 74308141. The reversal of 74308131 is 13180347.

It is not a de Polignac number, because 74308131 - 2³ = 74308123 is a prime.

It is a super-2 number, since 2×74308131² = 11043396665426322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2752153 = 74308131 / (7 + 4 + 3 + 0 + 8 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74308095 and 74308104.

It is not an unprimeable number, because it can be changed into a prime (74308141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376050 + ... + 1376103.

It is an arithmetic number, because the mean of its divisors is an integer number (13760770).

Almost surely, 2^74308131 is an apocalyptic number.

74308131 is a deficient number, since it is larger than the sum of its proper divisors (35778029).

74308131 is a wasteful number, since it uses less digits than its factorization.

74308131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752162 (or 2752156 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 74308131 is about 8620.2164125966. The cubic root of 74308131 is about 420.4155580890.

Adding to 74308131 its reverse (13180347), we get a palindrome (87488478).

The spelling of 74308131 in words is "seventy-four million, three hundred eight thousand, one hundred thirty-one".