31452973 has 2 divisors, whose sum is σ = 31452974. Its totient is φ = 31452972.

The previous prime is 31452943. The next prime is 31452977. The reversal of 31452973 is 37925413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24472809 + 6980164 = 4947^2 + 2642^2 .

It is a cyclic number.

It is not a de Polignac number, because 31452973 - 2⁹ = 31452461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31452977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15726486 + 15726487.

It is an arithmetic number, because the mean of its divisors is an integer number (15726487).

Almost surely, 2^31452973 is an apocalyptic number.

It is an amenable number.

31452973 is a deficient number, since it is larger than the sum of its proper divisors (1).

31452973 is an equidigital number, since it uses as much as digits as its factorization.

31452973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 31452973 is about 5608.2950172044. The cubic root of 31452973 is about 315.6607378805.

The spelling of 31452973 in words is "thirty-one million, four hundred fifty-two thousand, nine hundred seventy-three".