1231113113043 has 16 divisors (see below), whose sum is σ = 1808439789312. Its totient is φ = 738741740000.

The previous prime is 1231113113017. The next prime is 1231113113053. The reversal of 1231113113043 is 3403113111321.

It is not a de Polignac number, because 1231113113043 - 2¹⁷ = 1231112981971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231113113053) 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, 184682103 + ... + 184688768.

It is an arithmetic number, because the mean of its divisors is an integer number (113027486832).

Almost surely, 2^{1231113113043} is an apocalyptic number.

1231113113043 is a deficient number, since it is larger than the sum of its proper divisors (577326676269).

1231113113043 is a wasteful number, since it uses less digits than its factorization.

1231113113043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369370986.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 1231113113043 its reverse (3403113111321), we get a palindrome (4634226224364).

The spelling of 1231113113043 in words is "one trillion, two hundred thirty-one billion, one hundred thirteen million, one hundred thirteen thousand, forty-three".