31011123332 has 36 divisors (see below), whose sum is σ = 63839146140. Its totient is φ = 13141142784.

The previous prime is 31011123263. The next prime is 31011123343. The reversal of 31011123332 is 23332111013.

It can be written as a sum of positive squares in 2 ways, for example, as 17674107136 + 13337016196 = 132944^2 + 115486^2 .

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 11 ways as a sum of consecutive naturals, for example, 871433 + ... + 906320.

It is an arithmetic number, because the mean of its divisors is an integer number (1773309615).

Almost surely, 2^31011123332 is an apocalyptic number.

It is an amenable number.

31011123332 is an abundant number, since it is smaller than the sum of its proper divisors (32828022808).

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

31011123332 is a wasteful number, since it uses less digits than its factorization.

31011123332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777860 (or 1777851 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31011123332 its reverse (23332111013), we get a palindrome (54343234345).

The spelling of 31011123332 in words is "thirty-one billion, eleven million, one hundred twenty-three thousand, three hundred thirty-two".