31662042 has 8 divisors (see below), whose sum is σ = 63324096. Its totient is φ = 10554012.

The previous prime is 31662023. The next prime is 31662073. The reversal of 31662042 is 24026613.

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

31662042 is an admirable 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, 2638498 + ... + 2638509.

It is an arithmetic number, because the mean of its divisors is an integer number (7915512).

Almost surely, 2^31662042 is an apocalyptic number.

31662042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31662042 is a wasteful number, since it uses less digits than its factorization.

31662042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277012.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 31662042 is about 5626.9034112912. The cubic root of 31662042 is about 316.3585965429.

Adding to 31662042 its reverse (24026613), we get a palindrome (55688655).

The spelling of 31662042 in words is "thirty-one million, six hundred sixty-two thousand, forty-two".