31464973 has 2 divisors, whose sum is σ = 31464974. Its totient is φ = 31464972.

The previous prime is 31464967. The next prime is 31464991. The reversal of 31464973 is 37946413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21141604 + 10323369 = 4598^2 + 3213^2 .

It is a cyclic number.

It is not a de Polignac number, because 31464973 - 2⁵ = 31464941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31404973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15732486 + 15732487.

It is an arithmetic number, because the mean of its divisors is an integer number (15732487).

Almost surely, 2^31464973 is an apocalyptic number.

It is an amenable number.

31464973 is a deficient number, since it is larger than the sum of its proper divisors (1).

31464973 is an equidigital number, since it uses as much as digits as its factorization.

31464973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 31464973 is about 5609.3647590436. The cubic root of 31464973 is about 315.7008766112.

The spelling of 31464973 in words is "thirty-one million, four hundred sixty-four thousand, nine hundred seventy-three".