1231130232 has 64 divisors (see below), whose sum is σ = 3599808000. Its totient is φ = 388776672.

The previous prime is 1231130227. The next prime is 1231130237. The reversal of 1231130232 is 2320311321.

It is an interprime number because it is at equal distance from previous prime (1231130227) and next prime (1231130237).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231130237) 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, 145888 + ... + 154095.

It is an arithmetic number, because the mean of its divisors is an integer number (56247000).

Almost surely, 2^1231130232 is an apocalyptic number.

1231130232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231130232 is an abundant number, since it is smaller than the sum of its proper divisors (2368677768).

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

1231130232 is a wasteful number, since it uses less digits than its factorization.

1231130232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300017 (or 300007 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1231130232 is about 35087.4654542046. The cubic root of 1231130232 is about 1071.7693473279.

Adding to 1231130232 its reverse (2320311321), we get a palindrome (3551441553).

The spelling of 1231130232 in words is "one billion, two hundred thirty-one million, one hundred thirty thousand, two hundred thirty-two".