31320123311332 has 6 divisors (see below), whose sum is σ = 54810215794838. Its totient is φ = 15660061655664.

The previous prime is 31320123311287. The next prime is 31320123311371. The reversal of 31320123311332 is 23311332102313.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25636743599076 + 5683379712256 = 5063274^2 + 2383984^2 .

It is a super-2 number, since 2×31320123311332² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31320123311332.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3915015413913 + ... + 3915015413920.

Almost surely, 2^{31320123311332} is an apocalyptic number.

It is an amenable number.

31320123311332 is a deficient number, since it is larger than the sum of its proper divisors (23490092483506).

31320123311332 is a wasteful number, since it uses less digits than its factorization.

31320123311332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7830030827837 (or 7830030827835 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 31320123311332 its reverse (23311332102313), we get a palindrome (54631455413645).

The spelling of 31320123311332 in words is "thirty-one trillion, three hundred twenty billion, one hundred twenty-three million, three hundred eleven thousand, three hundred thirty-two".