31103320132 has 12 divisors (see below), whose sum is σ = 54624516156. Its totient is φ = 15496315520.

The previous prime is 31103320111. The next prime is 31103320147. The reversal of 31103320132 is 23102330113.

It can be written as a sum of positive squares in 2 ways, for example, as 26031886336 + 5071433796 = 161344^2 + 71214^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13834873 + ... + 13837120.

It is an arithmetic number, because the mean of its divisors is an integer number (4552043013).

Almost surely, 2^31103320132 is an apocalyptic number.

It is an amenable number.

31103320132 is a deficient number, since it is larger than the sum of its proper divisors (23521196024).

31103320132 is a wasteful number, since it uses less digits than its factorization.

31103320132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27672278 (or 27672276 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31103320132 its reverse (23102330113), we get a palindrome (54205650245).

The spelling of 31103320132 in words is "thirty-one billion, one hundred three million, three hundred twenty thousand, one hundred thirty-two".