1312223131120 has 40 divisors (see below), whose sum is σ = 3328275034800. Its totient is φ = 477172047360.

The previous prime is 1312223131081. The next prime is 1312223131127. The reversal of 1312223131120 is 211313222131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1312223131091 and 1312223131100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312223131127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745580445 + ... + 745582204.

It is an arithmetic number, because the mean of its divisors is an integer number (83206875870).

Almost surely, 2^{1312223131120} is an apocalyptic number.

1312223131120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312223131120 is an abundant number, since it is smaller than the sum of its proper divisors (2016051903680).

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

1312223131120 is a wasteful number, since it uses less digits than its factorization.

1312223131120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491162673 (or 1491162667 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1312223131120 its reverse (211313222131), we get a palindrome (1523536353251).

The spelling of 1312223131120 in words is "one trillion, three hundred twelve billion, two hundred twenty-three million, one hundred thirty-one thousand, one hundred twenty".