1243231000 has 64 divisors (see below), whose sum is σ = 3173657760. Its totient is φ = 452080000.

The previous prime is 1243230997. The next prime is 1243231013. The reversal of 1243231000 is 1323421.

It is a happy number.

It is a super-2 number, since 2×1243231000² = 3091246638722000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45511 + ... + 67510.

Almost surely, 2^1243231000 is an apocalyptic number.

1243231000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243231000 is an abundant number, since it is smaller than the sum of its proper divisors (1930426760).

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

1243231000 is a wasteful number, since it uses less digits than its factorization.

1243231000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113053 (or 113039 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1243231000 is about 35259.4809944786. The cubic root of 1243231000 is about 1075.2693754359.

Adding to 1243231000 its reverse (1323421), we get a palindrome (1244554421).

The spelling of 1243231000 in words is "one billion, two hundred forty-three million, two hundred thirty-one thousand".