31482973 has 2 divisors, whose sum is σ = 31482974. Its totient is φ = 31482972.

The previous prime is 31482947. The next prime is 31482977. The reversal of 31482973 is 37928413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27899524 + 3583449 = 5282^2 + 1893^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31482973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31482977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15741486 + 15741487.

It is an arithmetic number, because the mean of its divisors is an integer number (15741487).

Almost surely, 2^31482973 is an apocalyptic number.

It is an amenable number.

31482973 is a deficient number, since it is larger than the sum of its proper divisors (1).

31482973 is an equidigital number, since it uses as much as digits as its factorization.

31482973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 31482973 is about 5610.9689893992. The cubic root of 31482973 is about 315.7610655766.

The spelling of 31482973 in words is "thirty-one million, four hundred eighty-two thousand, nine hundred seventy-three".