12002031000 has 192 divisors, whose sum is σ = 41511618720. Its totient is φ = 3126009600.

The previous prime is 12002030969. The next prime is 12002031001. The reversal of 12002031000 is 13020021.

It is a happy number.

It is a super-2 number, since 2×12002031000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002031001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 371494 + ... + 402506.

Almost surely, 2^12002031000 is an apocalyptic number.

12002031000 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 12002031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20755809360).

12002031000 is an abundant number, since it is smaller than the sum of its proper divisors (29509587720).

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

12002031000 is a wasteful number, since it uses less digits than its factorization.

12002031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31083 (or 31066 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 12002031000 its reverse (13020021), we get a palindrome (12015051021).

The spelling of 12002031000 in words is "twelve billion, two million, thirty-one thousand".