31673066 has 4 divisors (see below), whose sum is σ = 47509602. Its totient is φ = 15836532.

The previous prime is 31673063. The next prime is 31673071. The reversal of 31673066 is 66037613.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66037613 = 367 ⋅179939.

It can be written as a sum of positive squares in only one way, i.e., 21298225 + 10374841 = 4615^2 + 3221^2 .

It is not an unprimeable number, because it can be changed into a prime (31673063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7918265 + ... + 7918268.

Almost surely, 2^31673066 is an apocalyptic number.

31673066 is a deficient number, since it is larger than the sum of its proper divisors (15836536).

31673066 is a wasteful number, since it uses less digits than its factorization.

31673066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15836535.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 31673066 is about 5627.8829056760. The cubic root of 31673066 is about 316.3953085622.

The spelling of 31673066 in words is "thirty-one million, six hundred seventy-three thousand, sixty-six".