31674491 has 2 divisors, whose sum is σ = 31674492. Its totient is φ = 31674490.

The previous prime is 31674439. The next prime is 31674499. The reversal of 31674491 is 19447613.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31674491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31674499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15837245 + 15837246.

It is an arithmetic number, because the mean of its divisors is an integer number (15837246).

Almost surely, 2^31674491 is an apocalyptic number.

31674491 is a deficient number, since it is larger than the sum of its proper divisors (1).

31674491 is an equidigital number, since it uses as much as digits as its factorization.

31674491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 31674491 is about 5628.0095060332. The cubic root of 31674491 is about 316.4000534617.

The spelling of 31674491 in words is "thirty-one million, six hundred seventy-four thousand, four hundred ninety-one".