31196393 has 4 divisors (see below), whose sum is σ = 31252368. Its totient is φ = 31140420.

The previous prime is 31196381. The next prime is 31196413. The reversal of 31196393 is 39369113.

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 a de Polignac number, because none of the positive numbers 2^k-31196393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31196353) 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, 27143 + ... + 28268.

It is an arithmetic number, because the mean of its divisors is an integer number (7813092).

Almost surely, 2^31196393 is an apocalyptic number.

It is an amenable number.

31196393 is a deficient number, since it is larger than the sum of its proper divisors (55975).

31196393 is an equidigital number, since it uses as much as digits as its factorization.

31196393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55974.

The product of its digits is 13122, while the sum is 35.

The square root of 31196393 is about 5585.3731298813. The cubic root of 31196393 is about 314.8000511542.

The spelling of 31196393 in words is "thirty-one million, one hundred ninety-six thousand, three hundred ninety-three".