1231442233 has 16 divisors (see below), whose sum is σ = 1459164160. Its totient is φ = 1016971200.

The previous prime is 1231442207. The next prime is 1231442249. The reversal of 1231442233 is 3322441321.

It is not a de Polignac number, because 1231442233 - 2⁹ = 1231441721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231442198 and 1231442207.

It is not an unprimeable number, because it can be changed into a prime (1231442203) 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, 37303 + ... + 62083.

It is an arithmetic number, because the mean of its divisors is an integer number (91197760).

Almost surely, 2^1231442233 is an apocalyptic number.

It is an amenable number.

1231442233 is a deficient number, since it is larger than the sum of its proper divisors (227721927).

1231442233 is a wasteful number, since it uses less digits than its factorization.

1231442233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25048.

The product of its digits is 3456, while the sum is 25.

The square root of 1231442233 is about 35091.9112189690. The cubic root of 1231442233 is about 1071.8598779247.

Adding to 1231442233 its reverse (3322441321), we get a palindrome (4553883554).

The spelling of 1231442233 in words is "one billion, two hundred thirty-one million, four hundred forty-two thousand, two hundred thirty-three".