1231351053120 has 224 divisors, whose sum is σ = 4365989337600. Its totient is φ = 326693025792.

The previous prime is 1231351053091. The next prime is 1231351053139. The reversal of 1231351053120 is 213501531321.

1231351053120 is a `hidden beast` number, since 1 + 23 + 1 + 3 + 510 + 5 + 3 + 120 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1340361 + ... + 2063799.

Almost surely, 2^{1231351053120} is an apocalyptic number.

1231351053120 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 1231351053120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2182994668800).

1231351053120 is an abundant number, since it is smaller than the sum of its proper divisors (3134638284480).

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

1231351053120 is a wasteful number, since it uses less digits than its factorization.

1231351053120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723662 (or 723646 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 1231351053120 its reverse (213501531321), we get a palindrome (1444852584441).

The spelling of 1231351053120 in words is "one trillion, two hundred thirty-one billion, three hundred fifty-one million, fifty-three thousand, one hundred twenty".