1231132232 has 48 divisors (see below), whose sum is σ = 2562267600. Its totient is φ = 549983840.

The previous prime is 1231132223. The next prime is 1231132267. The reversal of 1231132232 is 2322311321.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304319 + ... + 308337.

It is an arithmetic number, because the mean of its divisors is an integer number (53380575).

Almost surely, 2^1231132232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231132232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1281133800).

1231132232 is an abundant number, since it is smaller than the sum of its proper divisors (1331135368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231132232 is a wasteful number, since it uses less digits than its factorization.

1231132232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154 (or 4091 counting only the distinct ones).

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

The square root of 1231132232 is about 35087.4939543992. The cubic root of 1231132232 is about 1071.7699276991.

Adding to 1231132232 its reverse (2322311321), we get a palindrome (3553443553).

Subtracting 1231132232 from its reverse (2322311321), we obtain a square (1091179089 = 33033²).

The spelling of 1231132232 in words is "one billion, two hundred thirty-one million, one hundred thirty-two thousand, two hundred thirty-two".