31672906 has 8 divisors (see below), whose sum is σ = 48405924. Its totient is φ = 15537600.

The previous prime is 31672903. The next prime is 31672919. The reversal of 31672906 is 60927613.

It can be written as a sum of positive squares in 2 ways, for example, as 30702681 + 970225 = 5541^2 + 985^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (31672903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149295 + ... + 149506.

Almost surely, 2^31672906 is an apocalyptic number.

31672906 is a deficient number, since it is larger than the sum of its proper divisors (16733018).

31672906 is a wasteful number, since it uses less digits than its factorization.

31672906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298856.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 31672906 is about 5627.8686907212. The cubic root of 31672906 is about 316.3947757926.

The spelling of 31672906 in words is "thirty-one million, six hundred seventy-two thousand, nine hundred six".