74531131 has 8 divisors (see below), whose sum is σ = 77197680. Its totient is φ = 71871072.

The previous prime is 74531123. The next prime is 74531159. The reversal of 74531131 is 13113547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74531131 - 2³ = 74531123 is a prime.

It is a super-2 number, since 2×74531131² = 11109778976278322, 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 = 74531096 and 74531105.

It is not an unprimeable number, because it can be changed into a prime (74531231) 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, 42141 + ... + 43873.

It is an arithmetic number, because the mean of its divisors is an integer number (9649710).

Almost surely, 2^74531131 is an apocalyptic number.

74531131 is a deficient number, since it is larger than the sum of its proper divisors (2666549).

74531131 is a wasteful number, since it uses less digits than its factorization.

74531131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245.

The product of its digits is 1260, while the sum is 25.

The square root of 74531131 is about 8633.1414328737. The cubic root of 74531131 is about 420.8356962344.

Adding to 74531131 its reverse (13113547), we get a palindrome (87644678).

The spelling of 74531131 in words is "seventy-four million, five hundred thirty-one thousand, one hundred thirty-one".