31131102223332 has 36 divisors (see below), whose sum is σ = 78998704952076. Its totient is φ = 10336656506880.

The previous prime is 31131102223289. The next prime is 31131102223379. The reversal of 31131102223332 is 23332220113113.

31131102223332 is a `hidden beast` number, since 3 + 1 + 1 + 3 + 1 + 102 + 223 + 332 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25147677444516 + 5983424778816 = 5014746^2 + 2446104^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 31131102223296 and 31131102223305.

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 11 ways as a sum of consecutive naturals, for example, 1682389269 + ... + 1682407772.

It is an arithmetic number, because the mean of its divisors is an integer number (2194408470891).

Almost surely, 2^{31131102223332} is an apocalyptic number.

It is an amenable number.

31131102223332 is an abundant number, since it is smaller than the sum of its proper divisors (47867602728744).

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

31131102223332 is a wasteful number, since it uses less digits than its factorization.

31131102223332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3364797308 (or 3364797303 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 31131102223332 its reverse (23332220113113), we get a palindrome (54463322336445).

The spelling of 31131102223332 in words is "thirty-one trillion, one hundred thirty-one billion, one hundred two million, two hundred twenty-three thousand, three hundred thirty-two".