31130122133200 has 30 divisors (see below), whose sum is σ = 74790118425974. Its totient is φ = 12452048853120.

The previous prime is 31130122133153. The next prime is 31130122133203. The reversal of 31130122133200 is 233122103113.

It can be written as a sum of positive squares in 3 ways, for example, as 71436460176 + 31058685673024 = 267276^2 + 5573032^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130122133203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38912652267 + ... + 38912653066.

Almost surely, 2^{31130122133200} is an apocalyptic number.

It is an amenable number.

31130122133200 is an abundant number, since it is smaller than the sum of its proper divisors (43659996292774).

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

31130122133200 is a wasteful number, since it uses less digits than its factorization.

31130122133200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77825305351 (or 77825305340 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31130122133200 its reverse (233122103113), we get a palindrome (31363244236313).

The spelling of 31130122133200 in words is "thirty-one trillion, one hundred thirty billion, one hundred twenty-two million, one hundred thirty-three thousand, two hundred".