31174493 has 4 divisors (see below), whose sum is σ = 35628000. Its totient is φ = 26720988.

The previous prime is 31174469. The next prime is 31174501. The reversal of 31174493 is 39447113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39447113 = 131 ⋅301123.

It is not a de Polignac number, because 31174493 - 2⁸ = 31174237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31174093) 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, 2226743 + ... + 2226756.

It is an arithmetic number, because the mean of its divisors is an integer number (8907000).

Almost surely, 2^31174493 is an apocalyptic number.

It is an amenable number.

31174493 is a deficient number, since it is larger than the sum of its proper divisors (4453507).

31174493 is an equidigital number, since it uses as much as digits as its factorization.

31174493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453506.

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

The square root of 31174493 is about 5583.4123078992. The cubic root of 31174493 is about 314.7263702537.

The spelling of 31174493 in words is "thirty-one million, one hundred seventy-four thousand, four hundred ninety-three".