31113162 has 36 divisors (see below), whose sum is σ = 71622486. Its totient is φ = 9759360.

The previous prime is 31113113. The next prime is 31113167. The reversal of 31113162 is 26131113.

It can be written as a sum of positive squares in 3 ways, for example, as 26224641 + 4888521 = 5121^2 + 2211^2 .

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (31113167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2212 + ... + 8192.

Almost surely, 2^31113162 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31113162, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35811243).

31113162 is an abundant number, since it is smaller than the sum of its proper divisors (40509324).

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

31113162 is a wasteful number, since it uses less digits than its factorization.

31113162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6023 (or 6003 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 31113162 is about 5577.9173532780. The cubic root of 31113162 is about 314.5198429165.

Adding to 31113162 its reverse (26131113), we get a palindrome (57244275).

The spelling of 31113162 in words is "thirty-one million, one hundred thirteen thousand, one hundred sixty-two".