1231000232 has 64 divisors (see below), whose sum is σ = 2883133440. Its totient is φ = 478699200.

The previous prime is 1231000231. The next prime is 1231000237. The reversal of 1231000232 is 2320001321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (1231000231) 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, 387113 + ... + 390279.

It is an arithmetic number, because the mean of its divisors is an integer number (45048960).

Almost surely, 2^1231000232 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 1231000232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1441566720).

1231000232 is an abundant number, since it is smaller than the sum of its proper divisors (1652133208).

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

1231000232 is a wasteful number, since it uses less digits than its factorization.

1231000232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822 (or 3818 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1231000232 is about 35085.6128918963. The cubic root of 1231000232 is about 1071.7316218526.

Adding to 1231000232 its reverse (2320001321), we get a palindrome (3551001553).

The spelling of 1231000232 in words is "one billion, two hundred thirty-one million, two hundred thirty-two", and thus it is an aban number.