74913431 has 4 divisors (see below), whose sum is σ = 74961600. Its totient is φ = 74865264.

The previous prime is 74913427. The next prime is 74913451. The reversal of 74913431 is 13431947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13431947 = 487 ⋅27581.

It is a cyclic number.

It is not a de Polignac number, because 74913431 - 2² = 74913427 is a prime.

It is a super-2 number, since 2×74913431² = 11224044288383522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74913401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21671 + ... + 24888.

It is an arithmetic number, because the mean of its divisors is an integer number (18740400).

Almost surely, 2^74913431 is an apocalyptic number.

74913431 is a deficient number, since it is larger than the sum of its proper divisors (48169).

74913431 is a wasteful number, since it uses less digits than its factorization.

74913431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48168.

The product of its digits is 9072, while the sum is 32.

The square root of 74913431 is about 8655.2545312082. The cubic root of 74913431 is about 421.5540143551.

The spelling of 74913431 in words is "seventy-four million, nine hundred thirteen thousand, four hundred thirty-one".