74031431 has 4 divisors (see below), whose sum is σ = 74284392. Its totient is φ = 73778472.

The previous prime is 74031367. The next prime is 74031437. The reversal of 74031431 is 13413047.

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 74031431 - 2⁶ = 74031367 is a prime.

It is a super-2 number, since 2×74031431² = 10961305551815522, 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 = 74031397 and 74031406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74031437) 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, 126041 + ... + 126626.

It is an arithmetic number, because the mean of its divisors is an integer number (18571098).

Almost surely, 2^74031431 is an apocalyptic number.

74031431 is a deficient number, since it is larger than the sum of its proper divisors (252961).

74031431 is a wasteful number, since it uses less digits than its factorization.

74031431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252960.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 74031431 is about 8604.1519628607. The cubic root of 74031431 is about 419.8930774686.

Adding to 74031431 its reverse (13413047), we get a palindrome (87444478).

The spelling of 74031431 in words is "seventy-four million, thirty-one thousand, four hundred thirty-one".