1031231232 has 108 divisors (see below), whose sum is σ = 3129915880. Its totient is φ = 325638144.

The previous prime is 1031231209. The next prime is 1031231239. The reversal of 1031231232 is 2321321301.

1031231232 is a `hidden beast` number, since 10 + 312 + 312 + 32 = 666.

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 (1031231239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31998 + ... + 55554.

Almost surely, 2^1031231232 is an apocalyptic number.

1031231232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1031231232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1564957940).

1031231232 is an abundant number, since it is smaller than the sum of its proper divisors (2098684648).

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

1031231232 is a wasteful number, since it uses less digits than its factorization.

1031231232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23598 (or 23581 counting only the distinct ones).

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

The square root of 1031231232 is about 32112.7892279696. The cubic root of 1031231232 is about 1010.3038761493.

Adding to 1031231232 its reverse (2321321301), we get a palindrome (3352552533).

The spelling of 1031231232 in words is "one billion, thirty-one million, two hundred thirty-one thousand, two hundred thirty-two".