31794797 has 2 divisors, whose sum is σ = 31794798. Its totient is φ = 31794796.

The previous prime is 31794787. The next prime is 31794799. The reversal of 31794797 is 79749713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25210441 + 6584356 = 5021^2 + 2566^2 .

It is a cyclic number.

It is not a de Polignac number, because 31794797 - 2⁴ = 31794781 is a prime.

Together with 31794799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31794799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15897398 + 15897399.

It is an arithmetic number, because the mean of its divisors is an integer number (15897399).

Almost surely, 2^31794797 is an apocalyptic number.

It is an amenable number.

31794797 is a deficient number, since it is larger than the sum of its proper divisors (1).

31794797 is an equidigital number, since it uses as much as digits as its factorization.

31794797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 47.

The square root of 31794797 is about 5638.6875245929. The cubic root of 31794797 is about 316.8001307530.

The spelling of 31794797 in words is "thirty-one million, seven hundred ninety-four thousand, seven hundred ninety-seven".