1131023212423 has 32 divisors (see below), whose sum is σ = 1249091363520. Its totient is φ = 1017741542400.

The previous prime is 1131023212421. The next prime is 1131023212477. The reversal of 1131023212423 is 3242123201311.

It is a cyclic number.

It is not a de Polignac number, because 1131023212423 - 2¹ = 1131023212421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131023212421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81355773 + ... + 81369673.

It is an arithmetic number, because the mean of its divisors is an integer number (39034105110).

Almost surely, 2^{1131023212423} is an apocalyptic number.

1131023212423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1131023212423 is a deficient number, since it is larger than the sum of its proper divisors (118068151097).

1131023212423 is a wasteful number, since it uses less digits than its factorization.

1131023212423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14947.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1131023212423 its reverse (3242123201311), we get a palindrome (4373146413734).

The spelling of 1131023212423 in words is "one trillion, one hundred thirty-one billion, twenty-three million, two hundred twelve thousand, four hundred twenty-three".