31674143 has 2 divisors, whose sum is σ = 31674144. Its totient is φ = 31674142.

The previous prime is 31674133. The next prime is 31674161. The reversal of 31674143 is 34147613.

It is a weak prime.

It is an emirp because it is prime and its reverse (34147613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31674143 - 2⁴ = 31674127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31674113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15837071 + 15837072.

It is an arithmetic number, because the mean of its divisors is an integer number (15837072).

Almost surely, 2^31674143 is an apocalyptic number.

31674143 is a deficient number, since it is larger than the sum of its proper divisors (1).

31674143 is an equidigital number, since it uses as much as digits as its factorization.

31674143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 29.

The square root of 31674143 is about 5627.9785891561. The cubic root of 31674143 is about 316.3988947204.

The spelling of 31674143 in words is "thirty-one million, six hundred seventy-four thousand, one hundred forty-three".