1231455343113 has 6 divisors (see below), whose sum is σ = 1778768828954. Its totient is φ = 820970228736.

The previous prime is 1231455343099. The next prime is 1231455343123. The reversal of 1231455343113 is 3113435541321.

1231455343113 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 4 + 5 + 534 + 3 + 113 = 666.

It can be written as a sum of positive squares in only one way, i.e., 943991014464 + 287464328649 = 971592^2 + 536157^2 .

It is not a de Polignac number, because 1231455343113 - 2¹⁴ = 1231455326729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231455343123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68414185720 + ... + 68414185737.

Almost surely, 2^{1231455343113} is an apocalyptic number.

It is an amenable number.

1231455343113 is a deficient number, since it is larger than the sum of its proper divisors (547313485841).

1231455343113 is a wasteful number, since it uses less digits than its factorization.

1231455343113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136828371463 (or 136828371460 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The spelling of 1231455343113 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-five million, three hundred forty-three thousand, one hundred thirteen".