1231000453055 has 16 divisors (see below), whose sum is σ = 1518137316000. Its totient is φ = 957544705152.

The previous prime is 1231000452959. The next prime is 1231000453057. The reversal of 1231000453055 is 5503540001321.

It is a cyclic number.

It is not a de Polignac number, because 1231000453055 - 2¹⁸ = 1231000190911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231000453057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1942184 + ... + 2496813.

It is an arithmetic number, because the mean of its divisors is an integer number (94883582250).

Almost surely, 2^{1231000453055} is an apocalyptic number.

1231000453055 is a deficient number, since it is larger than the sum of its proper divisors (287136862945).

1231000453055 is a wasteful number, since it uses less digits than its factorization.

1231000453055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440538.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 1231000453055 its reverse (5503540001321), we get a palindrome (6734540454376).

The spelling of 1231000453055 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-three thousand, fifty-five".