31040340132 has 24 divisors (see below), whose sum is σ = 72608088672. Its totient is φ = 10320976000.

The previous prime is 31040340127. The next prime is 31040340169. The reversal of 31040340132 is 23104304013.

It is a junction number, because it is equal to n+sod(n) for n = 31040340099 and 31040340108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3220494 + ... + 3230117.

It is an arithmetic number, because the mean of its divisors is an integer number (3025337028).

Almost surely, 2^31040340132 is an apocalyptic number.

It is an amenable number.

31040340132 is an abundant number, since it is smaller than the sum of its proper divisors (41567748540).

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

31040340132 is a wasteful number, since it uses less digits than its factorization.

31040340132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6451019 (or 6451017 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31040340132 its reverse (23104304013), we get a palindrome (54144644145).

The spelling of 31040340132 in words is "thirty-one billion, forty million, three hundred forty thousand, one hundred thirty-two".