2131223423 has 8 divisors (see below), whose sum is σ = 2439308448. Its totient is φ = 1824044544.

The previous prime is 2131223389. The next prime is 2131223473. The reversal of 2131223423 is 3243221312.

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

It is not a de Polignac number, because 2131223423 - 2⁶ = 2131223359 is a prime.

It is a super-2 number, since 2×2131223423² = 9084226557487673858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131223473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221486 + ... + 230907.

It is an arithmetic number, because the mean of its divisors is an integer number (304913556).

Almost surely, 2^2131223423 is an apocalyptic number.

2131223423 is a deficient number, since it is larger than the sum of its proper divisors (308085025).

2131223423 is an equidigital number, since it uses as much as digits as its factorization.

2131223423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453073.

The product of its digits is 1728, while the sum is 23.

The square root of 2131223423 is about 46165.1754356030. The cubic root of 2131223423 is about 1286.8946444794.

Adding to 2131223423 its reverse (3243221312), we get a palindrome (5374444735).

The spelling of 2131223423 in words is "two billion, one hundred thirty-one million, two hundred twenty-three thousand, four hundred twenty-three".