31668622 has 8 divisors (see below), whose sum is σ = 48212136. Its totient is φ = 15597912.

The previous prime is 31668607. The next prime is 31668653. The reversal of 31668622 is 22686613.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118033 + ... + 118300.

It is an arithmetic number, because the mean of its divisors is an integer number (6026517).

Almost surely, 2^31668622 is an apocalyptic number.

31668622 is a deficient number, since it is larger than the sum of its proper divisors (16543514).

31668622 is a wasteful number, since it uses less digits than its factorization.

31668622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236402.

The product of its digits is 20736, while the sum is 34.

The square root of 31668622 is about 5627.4880719554. The cubic root of 31668622 is about 316.3805102209.

Subtracting from 31668622 its reverse (22686613), we obtain a square (8982009 = 2997²).

The spelling of 31668622 in words is "thirty-one million, six hundred sixty-eight thousand, six hundred twenty-two".