31170371132 has 12 divisors (see below), whose sum is σ = 54614434896. Its totient is φ = 15566246880.

The previous prime is 31170371129. The next prime is 31170371137. The reversal of 31170371132 is 23117307113.

It is a happy number.

It is a super-2 number, since 2×31170371132² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31170371095 and 31170371104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31170371137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4730969 + ... + 4737552.

It is an arithmetic number, because the mean of its divisors is an integer number (4551202908).

Almost surely, 2^31170371132 is an apocalyptic number.

It is an amenable number.

31170371132 is a deficient number, since it is larger than the sum of its proper divisors (23444063764).

31170371132 is a wasteful number, since it uses less digits than its factorization.

31170371132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9469348 (or 9469346 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 29.

Adding to 31170371132 its reverse (23117307113), we get a palindrome (54287678245).

The spelling of 31170371132 in words is "thirty-one billion, one hundred seventy million, three hundred seventy-one thousand, one hundred thirty-two".