74281431 has 32 divisors (see below), whose sum is σ = 120637440. Its totient is φ = 39710304.

The previous prime is 74281399. The next prime is 74281451. The reversal of 74281431 is 13418247.

It is not a de Polignac number, because 74281431 - 2⁵ = 74281399 is a prime.

It is a super-2 number, since 2×74281431² = 11035461982815522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74281451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31996 + ... + 34238.

It is an arithmetic number, because the mean of its divisors is an integer number (3769920).

Almost surely, 2^74281431 is an apocalyptic number.

74281431 is a deficient number, since it is larger than the sum of its proper divisors (46356009).

74281431 is a wasteful number, since it uses less digits than its factorization.

74281431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355.

The product of its digits is 5376, while the sum is 30.

The square root of 74281431 is about 8618.6675884385. The cubic root of 74281431 is about 420.3651982340.

Adding to 74281431 its reverse (13418247), we get a palindrome (87699678).

The spelling of 74281431 in words is "seventy-four million, two hundred eighty-one thousand, four hundred thirty-one".