1031132123120 has 160 divisors (see below), whose sum is σ = 2802795609600. Its totient is φ = 348961029120.

The previous prime is 1031132123113. The next prime is 1031132123123. The reversal of 1031132123120 is 213212311301.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1031132123092 and 1031132123101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031132123123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60431 + ... + 1437329.

It is an arithmetic number, because the mean of its divisors is an integer number (17517472560).

Almost surely, 2^{1031132123120} is an apocalyptic number.

1031132123120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1031132123120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1401397804800).

1031132123120 is an abundant number, since it is smaller than the sum of its proper divisors (1771663486480).

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

1031132123120 is a wasteful number, since it uses less digits than its factorization.

1031132123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376983 (or 1376977 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1031132123120 its reverse (213212311301), we get a palindrome (1244344434421).

The spelling of 1031132123120 in words is "one trillion, thirty-one billion, one hundred thirty-two million, one hundred twenty-three thousand, one hundred twenty".