1031323121120 has 24 divisors (see below), whose sum is σ = 2436500874024. Its totient is φ = 412529248384.

The previous prime is 1031323121117. The next prime is 1031323121137. The reversal of 1031323121120 is 211213231301.

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 = 1031323121092 and 1031323121101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3222884594 + ... + 3222884913.

It is an arithmetic number, because the mean of its divisors is an integer number (101520869751).

Almost surely, 2^{1031323121120} is an apocalyptic number.

1031323121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031323121120 is an abundant number, since it is smaller than the sum of its proper divisors (1405177752904).

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

1031323121120 is an equidigital number, since it uses as much as digits as its factorization.

1031323121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6445769522 (or 6445769514 counting only the distinct ones).

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

Adding to 1031323121120 its reverse (211213231301), we get a palindrome (1242536352421).

The spelling of 1031323121120 in words is "one trillion, thirty-one billion, three hundred twenty-three million, one hundred twenty-one thousand, one hundred twenty".