74723431 has 4 divisors (see below), whose sum is σ = 74776312. Its totient is φ = 74670552.

The previous prime is 74723413. The next prime is 74723437. The reversal of 74723431 is 13432747.

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 74723431 - 2⁷ = 74723303 is a prime.

It is a super-2 number, since 2×74723431² = 11167182280823522, 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 = 74723393 and 74723402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74723437) 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, 24261 + ... + 27166.

It is an arithmetic number, because the mean of its divisors is an integer number (18694078).

Almost surely, 2^74723431 is an apocalyptic number.

74723431 is a deficient number, since it is larger than the sum of its proper divisors (52881).

74723431 is a wasteful number, since it uses less digits than its factorization.

74723431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52880.

The product of its digits is 14112, while the sum is 31.

The square root of 74723431 is about 8644.2715713934. The cubic root of 74723431 is about 421.1973223201.

The spelling of 74723431 in words is "seventy-four million, seven hundred twenty-three thousand, four hundred thirty-one".