31834397 has 12 divisors (see below), whose sum is σ = 37104480. Its totient is φ = 26755248.

The previous prime is 31834391. The next prime is 31834399. The reversal of 31834397 is 79343813.

It is not a de Polignac number, because 31834397 - 2⁴ = 31834381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31834397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31834391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18854 + ... + 20472.

It is an arithmetic number, because the mean of its divisors is an integer number (3092040).

Almost surely, 2^31834397 is an apocalyptic number.

It is an amenable number.

31834397 is a deficient number, since it is larger than the sum of its proper divisors (5270083).

31834397 is an equidigital number, since it uses as much as digits as its factorization.

31834397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732 (or 1679 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 31834397 is about 5642.1978873485. The cubic root of 31834397 is about 316.9315996476.

The spelling of 31834397 in words is "thirty-one million, eight hundred thirty-four thousand, three hundred ninety-seven".