1231111552054 has 4 divisors (see below), whose sum is σ = 1846667328084. Its totient is φ = 615555776026.

The previous prime is 1231111552009. The next prime is 1231111552079. The reversal of 1231111552054 is 4502551111321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307777888012 + ... + 307777888015.

It is an arithmetic number, because the mean of its divisors is an integer number (461666832021).

Almost surely, 2^{1231111552054} is an apocalyptic number.

1231111552054 is a deficient number, since it is larger than the sum of its proper divisors (615555776030).

1231111552054 is an equidigital number, since it uses as much as digits as its factorization.

1231111552054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615555776029.

The product of its (nonzero) digits is 6000, while the sum is 31.

Adding to 1231111552054 its reverse (4502551111321), we get a palindrome (5733662663375).

The spelling of 1231111552054 in words is "one trillion, two hundred thirty-one billion, one hundred eleven million, five hundred fifty-two thousand, fifty-four".