1232213231 has 8 divisors (see below), whose sum is σ = 1245223344. Its totient is φ = 1219219200.

The previous prime is 1232213207. The next prime is 1232213233. The reversal of 1232213231 is 1323122321.

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

It is a cyclic number.

It is not a de Polignac number, because 1232213231 - 2⁶ = 1232213167 is a prime.

It is a super-2 number, since 2×1232213231² = 3036698893302918722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232213233) 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, 207455 + ... + 213311.

It is an arithmetic number, because the mean of its divisors is an integer number (155652918).

Almost surely, 2^1232213231 is an apocalyptic number.

1232213231 is a deficient number, since it is larger than the sum of its proper divisors (13010113).

1232213231 is a wasteful number, since it uses less digits than its factorization.

1232213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8041.

The product of its digits is 432, while the sum is 20.

The square root of 1232213231 is about 35102.8949091097. The cubic root of 1232213231 is about 1072.0835260970.

Adding to 1232213231 its reverse (1323122321), we get a palindrome (2555335552).

The spelling of 1232213231 in words is "one billion, two hundred thirty-two million, two hundred thirteen thousand, two hundred thirty-one".