31321321132 has 6 divisors (see below), whose sum is σ = 54812311988. Its totient is φ = 15660660564.

The previous prime is 31321321123. The next prime is 31321321139. The reversal of 31321321132 is 23112312313.

It is a super-2 number, since 2×31321321132² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31321321139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3915165138 + ... + 3915165145.

Almost surely, 2^31321321132 is an apocalyptic number.

It is an amenable number.

31321321132 is a deficient number, since it is larger than the sum of its proper divisors (23490990856).

31321321132 is a wasteful number, since it uses less digits than its factorization.

31321321132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7830330287 (or 7830330285 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

Adding to 31321321132 its reverse (23112312313), we get a palindrome (54433633445).

The spelling of 31321321132 in words is "thirty-one billion, three hundred twenty-one million, three hundred twenty-one thousand, one hundred thirty-two".