31140162 has 24 divisors (see below), whose sum is σ = 69295356. Its totient is φ = 10099296.

The previous prime is 31140157. The next prime is 31140191. The reversal of 31140162 is 26104113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24591681 + 6548481 = 4959^2 + 2559^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22713 + ... + 24044.

Almost surely, 2^31140162 is an apocalyptic number.

31140162 is an abundant number, since it is smaller than the sum of its proper divisors (38155194).

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

31140162 is a wasteful number, since it uses less digits than its factorization.

31140162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46802 (or 46799 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 31140162 is about 5580.3370865925. The cubic root of 31140162 is about 314.6107967116.

Adding to 31140162 its reverse (26104113), we get a palindrome (57244275).

The spelling of 31140162 in words is "thirty-one million, one hundred forty thousand, one hundred sixty-two".