1231130240423 has 16 divisors (see below), whose sum is σ = 1240050556800. Its totient is φ = 1222245737760.

The previous prime is 1231130240401. The next prime is 1231130240437. The reversal of 1231130240423 is 3240420311321.

It is a cyclic number.

It is not a de Polignac number, because 1231130240423 - 2²⁰ = 1231129191847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231130240392 and 1231130240401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231130242423) 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, 131371928 + ... + 131381298.

It is an arithmetic number, because the mean of its divisors is an integer number (77503159800).

Almost surely, 2^{1231130240423} is an apocalyptic number.

1231130240423 is a deficient number, since it is larger than the sum of its proper divisors (8920316377).

1231130240423 is a wasteful number, since it uses less digits than its factorization.

1231130240423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11182.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1231130240423 its reverse (3240420311321), we get a palindrome (4471550551744).

The spelling of 1231130240423 in words is "one trillion, two hundred thirty-one billion, one hundred thirty million, two hundred forty thousand, four hundred twenty-three".