1231115453111 has 8 divisors (see below), whose sum is σ = 1236574598400. Its totient is φ = 1225656621688.

The previous prime is 1231115453101. The next prime is 1231115453129. The reversal of 1231115453111 is 1113545111321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231115453111 - 2⁶ = 1231115453047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231115453101) 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 7 ways as a sum of consecutive naturals, for example, 11660420 + ... + 11765526.

It is an arithmetic number, because the mean of its divisors is an integer number (154571824800).

Almost surely, 2^{1231115453111} is an apocalyptic number.

1231115453111 is a deficient number, since it is larger than the sum of its proper divisors (5459145289).

1231115453111 is a wasteful number, since it uses less digits than its factorization.

1231115453111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156933.

The product of its digits is 1800, while the sum is 29.

The spelling of 1231115453111 in words is "one trillion, two hundred thirty-one billion, one hundred fifteen million, four hundred fifty-three thousand, one hundred eleven".