74108431 has 4 divisors (see below), whose sum is σ = 74941200. Its totient is φ = 73275664.

The previous prime is 74108407. The next prime is 74108449. The reversal of 74108431 is 13480147.

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 74108431 - 2⁹ = 74107919 is a prime.

It is a super-2 number, since 2×74108431² = 10984119090563522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74108431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74108401) 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, 416251 + ... + 416428.

It is an arithmetic number, because the mean of its divisors is an integer number (18735300).

Almost surely, 2^74108431 is an apocalyptic number.

74108431 is a deficient number, since it is larger than the sum of its proper divisors (832769).

74108431 is an equidigital number, since it uses as much as digits as its factorization.

74108431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832768.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 74108431 is about 8608.6253838810. The cubic root of 74108431 is about 420.0386037835.

Adding to 74108431 its reverse (13480147), we get a palindrome (87588578).

The spelling of 74108431 in words is "seventy-four million, one hundred eight thousand, four hundred thirty-one".