31326493 has 4 divisors (see below), whose sum is σ = 34174368. Its totient is φ = 28478620.

The previous prime is 31326479. The next prime is 31326517. The reversal of 31326493 is 39462313.

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.

It is a cyclic number.

It is not a de Polignac number, because 31326493 - 2¹⁷ = 31195421 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 (31326413) 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, 1423921 + ... + 1423942.

It is an arithmetic number, because the mean of its divisors is an integer number (8543592).

Almost surely, 2^31326493 is an apocalyptic number.

It is an amenable number.

31326493 is a deficient number, since it is larger than the sum of its proper divisors (2847875).

31326493 is a wasteful number, since it uses less digits than its factorization.

31326493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847874.

The product of its digits is 11664, while the sum is 31.

The square root of 31326493 is about 5597.0075040150. The cubic root of 31326493 is about 315.2370534409.

The spelling of 31326493 in words is "thirty-one million, three hundred twenty-six thousand, four hundred ninety-three".