31243313132 has 6 divisors (see below), whose sum is σ = 54675797988. Its totient is φ = 15621656564.

The previous prime is 31243313131. The next prime is 31243313147. The reversal of 31243313132 is 23131334213.

It is a super-2 number, since 2×31243313132² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31243313131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3905414138 + ... + 3905414145.

It is an arithmetic number, because the mean of its divisors is an integer number (9112632998).

Almost surely, 2^31243313132 is an apocalyptic number.

It is an amenable number.

31243313132 is a deficient number, since it is larger than the sum of its proper divisors (23432484856).

31243313132 is a wasteful number, since it uses less digits than its factorization.

31243313132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7810828287 (or 7810828285 counting only the distinct ones).

The product of its digits is 3888, while the sum is 26.

Adding to 31243313132 its reverse (23131334213), we get a palindrome (54374647345).

The spelling of 31243313132 in words is "thirty-one billion, two hundred forty-three million, three hundred thirteen thousand, one hundred thirty-two".