31442086 has 8 divisors (see below), whose sum is σ = 50791104. Its totient is φ = 14511720.

The previous prime is 31442083. The next prime is 31442087. The reversal of 31442086 is 68024413.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31442083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604630 + ... + 604681.

It is an arithmetic number, because the mean of its divisors is an integer number (6348888).

Almost surely, 2^31442086 is an apocalyptic number.

31442086 is a deficient number, since it is larger than the sum of its proper divisors (19349018).

31442086 is a wasteful number, since it uses less digits than its factorization.

31442086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209326.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 31442086 is about 5607.3243173549. The cubic root of 31442086 is about 315.6243131835.

Adding to 31442086 its reverse (68024413), we get a palindrome (99466499).

The spelling of 31442086 in words is "thirty-one million, four hundred forty-two thousand, eighty-six".