31327086 has 64 divisors (see below), whose sum is σ = 77483520. Its totient is φ = 8242560.

The previous prime is 31327063. The next prime is 31327097. The reversal of 31327086 is 68072313.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28996 + ... + 30056.

It is an arithmetic number, because the mean of its divisors is an integer number (1210680).

Almost surely, 2^31327086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31327086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38741760).

31327086 is an abundant number, since it is smaller than the sum of its proper divisors (46156434).

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

31327086 is a wasteful number, since it uses less digits than its factorization.

31327086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 31327086 is about 5597.0604785012. The cubic root of 31327086 is about 315.2390425389.

Adding to 31327086 its reverse (68072313), we get a palindrome (99399399).

The spelling of 31327086 in words is "thirty-one million, three hundred twenty-seven thousand, eighty-six".