31663442 has 8 divisors (see below), whose sum is σ = 47520000. Its totient is φ = 15823444.

The previous prime is 31663417. The next prime is 31663559. The reversal of 31663442 is 24436613.

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

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, 3359 + ... + 8637.

It is an arithmetic number, because the mean of its divisors is an integer number (5940000).

Almost surely, 2^31663442 is an apocalyptic number.

31663442 is a deficient number, since it is larger than the sum of its proper divisors (15856558).

31663442 is a wasteful number, since it uses less digits than its factorization.

31663442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280.

The product of its digits is 10368, while the sum is 29.

The square root of 31663442 is about 5627.0278122647. The cubic root of 31663442 is about 316.3632592818.

The spelling of 31663442 in words is "thirty-one million, six hundred sixty-three thousand, four hundred forty-two".