31106130 has 32 divisors (see below), whose sum is σ = 81442368. Its totient is φ = 7540800.

The previous prime is 31106129. The next prime is 31106219. The reversal of 31106130 is 3160113.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46801 + ... + 47460.

It is an arithmetic number, because the mean of its divisors is an integer number (2545074).

Almost surely, 2^31106130 is an apocalyptic number.

31106130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31106130 is an abundant number, since it is smaller than the sum of its proper divisors (50336238).

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

31106130 is a wasteful number, since it uses less digits than its factorization.

31106130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94282.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 31106130 is about 5577.2869748651. The cubic root of 31106130 is about 314.4961458696.

Adding to 31106130 its reverse (3160113), we get a palindrome (34266243).

The spelling of 31106130 in words is "thirty-one million, one hundred six thousand, one hundred thirty".