31764969 has 6 divisors (see below), whose sum is σ = 45882746. Its totient is φ = 21176640.

The previous prime is 31764949. The next prime is 31764973. The reversal of 31764969 is 96946713.

It can be written as a sum of positive squares in only one way, i.e., 27405225 + 4359744 = 5235^2 + 2088^2 .

It is not a de Polignac number, because 31764969 - 2⁵ = 31764937 is a prime.

It is a super-2 number, since 2×31764969² = 2018026511141922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31764949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1764712 + ... + 1764729.

Almost surely, 2^31764969 is an apocalyptic number.

It is an amenable number.

31764969 is a deficient number, since it is larger than the sum of its proper divisors (14117777).

31764969 is a wasteful number, since it uses less digits than its factorization.

31764969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3529447 (or 3529444 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 31764969 is about 5636.0419622285. The cubic root of 31764969 is about 316.7010320353.

The spelling of 31764969 in words is "thirty-one million, seven hundred sixty-four thousand, nine hundred sixty-nine".