31116132 has 36 divisors (see below), whose sum is σ = 79361100. Its totient is φ = 10278912.

The previous prime is 31116109. The next prime is 31116139. The reversal of 31116132 is 23161113.

It can be written as a sum of positive squares in 2 ways, for example, as 910116 + 30206016 = 954^2 + 5496^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 (31116139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244 + ... + 7892.

It is an arithmetic number, because the mean of its divisors is an integer number (2204475).

Almost surely, 2^31116132 is an apocalyptic number.

It is an amenable number.

31116132 is an abundant number, since it is smaller than the sum of its proper divisors (48244968).

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

31116132 is a wasteful number, since it uses less digits than its factorization.

31116132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772 (or 7767 counting only the distinct ones).

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

The square root of 31116132 is about 5578.1835753227. The cubic root of 31116132 is about 314.5298504091.

Adding to 31116132 its reverse (23161113), we get a palindrome (54277245).

It can be divided in two parts, 3111613 and 2, that multiplied together give a palindrome (6223226).

The spelling of 31116132 in words is "thirty-one million, one hundred sixteen thousand, one hundred thirty-two".