31764973 has 2 divisors, whose sum is σ = 31764974. Its totient is φ = 31764972.

The previous prime is 31764949. The next prime is 31764991. The reversal of 31764973 is 37946713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24571849 + 7193124 = 4957^2 + 2682^2 .

It is a cyclic number.

It is not a de Polignac number, because 31764973 - 2⁹ = 31764461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31764673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15882486 + 15882487.

It is an arithmetic number, because the mean of its divisors is an integer number (15882487).

Almost surely, 2^31764973 is an apocalyptic number.

It is an amenable number.

31764973 is a deficient number, since it is larger than the sum of its proper divisors (1).

31764973 is an equidigital number, since it uses as much as digits as its factorization.

31764973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 40.

The square root of 31764973 is about 5636.0423170874. The cubic root of 31764973 is about 316.7010453288.

The spelling of 31764973 in words is "thirty-one million, seven hundred sixty-four thousand, nine hundred seventy-three".