31113108 has 72 divisors (see below), whose sum is σ = 89180000. Its totient is φ = 9066816.

The previous prime is 31113083. The next prime is 31113109. The reversal of 31113108 is 80131113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7143 + ... + 10641.

Almost surely, 2^31113108 is an apocalyptic number.

31113108 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31113108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44590000).

31113108 is an abundant number, since it is smaller than the sum of its proper divisors (58066892).

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

31113108 is a wasteful number, since it uses less digits than its factorization.

31113108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541 (or 3536 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 31113108 is about 5577.9125127596. The cubic root of 31113108 is about 314.5196609562.

It can be divided in two parts, 3 and 1113108, that added together give a palindrome (1113111).

The spelling of 31113108 in words is "thirty-one million, one hundred thirteen thousand, one hundred eight".