74131331 has 4 divisors (see below), whose sum is σ = 78033000. Its totient is φ = 70229664.

The previous prime is 74131327. The next prime is 74131349. The reversal of 74131331 is 13313147.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74131331 - 2² = 74131327 is a prime.

It is a super-2 number, since 2×74131331² = 10990908471663122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74131297 and 74131306.

It is not an unprimeable number, because it can be changed into a prime (74131301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1950806 + ... + 1950843.

It is an arithmetic number, because the mean of its divisors is an integer number (19508250).

Almost surely, 2^74131331 is an apocalyptic number.

74131331 is a deficient number, since it is larger than the sum of its proper divisors (3901669).

74131331 is a wasteful number, since it uses less digits than its factorization.

74131331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901668.

The product of its digits is 756, while the sum is 23.

The square root of 74131331 is about 8609.9553425090. The cubic root of 74131331 is about 420.0818642389.

Adding to 74131331 its reverse (13313147), we get a palindrome (87444478).

The spelling of 74131331 in words is "seventy-four million, one hundred thirty-one thousand, three hundred thirty-one".