1231140000 has 360 divisors, whose sum is σ = 4350332448. Its totient is φ = 304640000.

The previous prime is 1231139989. The next prime is 1231140007. The reversal of 1231140000 is 411321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231140007) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 17339965 + ... + 17340035.

Almost surely, 2^1231140000 is an apocalyptic number.

1231140000 is a gapful number since it is divisible by the number (10) 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 1231140000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2175166224).

1231140000 is an abundant number, since it is smaller than the sum of its proper divisors (3119192448).

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

1231140000 is an equidigital number, since it uses as much as digits as its factorization.

1231140000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1231140000 is about 35087.6046489355. The cubic root of 1231140000 is about 1071.7721818548.

Adding to 1231140000 its reverse (411321), we get a palindrome (1231551321).

The spelling of 1231140000 in words is "one billion, two hundred thirty-one million, one hundred forty thousand".