31117132 has 6 divisors (see below), whose sum is σ = 54454988. Its totient is φ = 15558564.

The previous prime is 31117127. The next prime is 31117133. The reversal of 31117132 is 23171113.

It is not an unprimeable number, because it can be changed into a prime (31117133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3889638 + ... + 3889645.

Almost surely, 2^31117132 is an apocalyptic number.

It is an amenable number.

31117132 is a deficient number, since it is larger than the sum of its proper divisors (23337856).

31117132 is a wasteful number, since it uses less digits than its factorization.

31117132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7779287 (or 7779285 counting only the distinct ones).

The product of its digits is 126, while the sum is 19.

The square root of 31117132 is about 5578.2732095156. The cubic root of 31117132 is about 314.5332197919.

Adding to 31117132 its reverse (23171113), we get a palindrome (54288245).

The spelling of 31117132 in words is "thirty-one million, one hundred seventeen thousand, one hundred thirty-two".