31676445 has 18 divisors (see below), whose sum is σ = 54971358. Its totient is φ = 16873968.

The previous prime is 31676443. The next prime is 31676453. The reversal of 31676445 is 54467613.

It is a happy number.

31676445 is a `hidden beast` number, since 3 + 1 + 6 + 7 + 644 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25341156 + 6335289 = 5034^2 + 2517^2 .

It is not a de Polignac number, because 31676445 - 2¹ = 31676443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31676443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 37336 + ... + 38174.

Almost surely, 2^31676445 is an apocalyptic number.

It is an amenable number.

31676445 is a deficient number, since it is larger than the sum of its proper divisors (23294913).

31676445 is an frugal number, since it uses more digits than its factorization.

31676445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689 (or 847 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 31676445 is about 5628.1830993670. The cubic root of 31676445 is about 316.4065595699.

The spelling of 31676445 in words is "thirty-one million, six hundred seventy-six thousand, four hundred forty-five".