31423042 has 8 divisors (see below), whose sum is σ = 53868096. Its totient is φ = 13467012.

The previous prime is 31423039. The next prime is 31423081. The reversal of 31423042 is 24032413.

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, 1122238 + ... + 1122265.

It is an arithmetic number, because the mean of its divisors is an integer number (6733512).

Almost surely, 2^31423042 is an apocalyptic number.

31423042 is a deficient number, since it is larger than the sum of its proper divisors (22445054).

31423042 is a wasteful number, since it uses less digits than its factorization.

31423042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244512.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 31423042 is about 5605.6259240160. The cubic root of 31423042 is about 315.5605773426.

Adding to 31423042 its reverse (24032413), we get a palindrome (55455455).

The spelling of 31423042 in words is "thirty-one million, four hundred twenty-three thousand, forty-two".