12031001001 has 12 divisors (see below), whose sum is σ = 18292750320. Its totient is φ = 7598526840.

The previous prime is 12031000981. The next prime is 12031001183. The reversal of 12031001001 is 10010013021.

It is not a de Polignac number, because 12031001001 - 2¹⁵ = 12030968233 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (12031081001) 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, 35178195 + ... + 35178536.

It is an arithmetic number, because the mean of its divisors is an integer number (1524395860).

Almost surely, 2^12031001001 is an apocalyptic number.

It is an amenable number.

12031001001 is a deficient number, since it is larger than the sum of its proper divisors (6261749319).

12031001001 is a wasteful number, since it uses less digits than its factorization.

12031001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70356756 (or 70356753 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 12031001001 its reverse (10010013021), we get a palindrome (22041014022).

The spelling of 12031001001 in words is "twelve billion, thirty-one million, one thousand, one".