31030233332 has 18 divisors (see below), whose sum is σ = 63168689682. Its totient is φ = 13298671344.

The previous prime is 31030233307. The next prime is 31030233341. The reversal of 31030233332 is 23333203013.

It can be written as a sum of positive squares in only one way, i.e., 21174906256 + 9855327076 = 145516^2 + 99274^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31030233298 and 31030233307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79158563 + ... + 79158954.

It is an arithmetic number, because the mean of its divisors is an integer number (3509371649).

Almost surely, 2^31030233332 is an apocalyptic number.

It is an amenable number.

31030233332 is an abundant number, since it is smaller than the sum of its proper divisors (32138456350).

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

31030233332 is a wasteful number, since it uses less digits than its factorization.

31030233332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158317535 (or 158317526 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 23.

Adding to 31030233332 its reverse (23333203013), we get a palindrome (54363436345).

The spelling of 31030233332 in words is "thirty-one billion, thirty million, two hundred thirty-three thousand, three hundred thirty-two".