1231424223 has 32 divisors (see below), whose sum is σ = 1774897920. Its totient is φ = 756579840.

The previous prime is 1231424221. The next prime is 1231424251. The reversal of 1231424223 is 3224241321.

It is a happy number.

It is not a de Polignac number, because 1231424223 - 2¹ = 1231424221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231424193 and 1231424202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231424221) 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, 953208 + ... + 954498.

It is an arithmetic number, because the mean of its divisors is an integer number (55465560).

Almost surely, 2^1231424223 is an apocalyptic number.

1231424223 is a deficient number, since it is larger than the sum of its proper divisors (543473697).

1231424223 is a wasteful number, since it uses less digits than its factorization.

1231424223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687.

The product of its digits is 2304, while the sum is 24.

The square root of 1231424223 is about 35091.6546061881. The cubic root of 1231424223 is about 1071.8546525367.

Adding to 1231424223 its reverse (3224241321), we get a palindrome (4455665544).

The spelling of 1231424223 in words is "one billion, two hundred thirty-one million, four hundred twenty-four thousand, two hundred twenty-three".