31107102 has 32 divisors (see below), whose sum is σ = 67767840. Its totient is φ = 9461760.

The previous prime is 31107079. The next prime is 31107143. The reversal of 31107102 is 20170113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4702 + ... + 9182.

It is an arithmetic number, because the mean of its divisors is an integer number (2117745).

Almost surely, 2^31107102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31107102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33883920).

31107102 is an abundant number, since it is smaller than the sum of its proper divisors (36660738).

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

31107102 is a wasteful number, since it uses less digits than its factorization.

31107102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4588.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 31107102 is about 5577.3741133261. The cubic root of 31107102 is about 314.4994216126.

Adding to 31107102 its reverse (20170113), we get a palindrome (51277215).

The spelling of 31107102 in words is "thirty-one million, one hundred seven thousand, one hundred two".