1231113230120 has 16 divisors (see below), whose sum is σ = 2770004767860. Its totient is φ = 492445292032.

The previous prime is 1231113230057. The next prime is 1231113230131. The reversal of 1231113230120 is 210323111321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1144339388644 + 86773841476 = 1069738^2 + 294574^2 .

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 = 1231113230092 and 1231113230101.

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, 15388915337 + ... + 15388915416.

Almost surely, 2^{1231113230120} is an apocalyptic number.

1231113230120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231113230120 is an abundant number, since it is smaller than the sum of its proper divisors (1538891537740).

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

1231113230120 is a wasteful number, since it uses less digits than its factorization.

1231113230120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30777830764 (or 30777830760 counting only the distinct ones).

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

Adding to 1231113230120 its reverse (210323111321), we get a palindrome (1441436341441).

The spelling of 1231113230120 in words is "one trillion, two hundred thirty-one billion, one hundred thirteen million, two hundred thirty thousand, one hundred twenty".