2001431021232 has 20 divisors (see below), whose sum is σ = 5170363471640. Its totient is φ = 667143673728.

The previous prime is 2001431021099. The next prime is 2001431021263. The reversal of 2001431021232 is 2321201341002.

It is a super-2 number, since 2×2001431021232² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001431021199 and 2001431021208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20848239757 + ... + 20848239852.

It is an arithmetic number, because the mean of its divisors is an integer number (258518173582).

Almost surely, 2^{2001431021232} is an apocalyptic number.

It is an amenable number.

2001431021232 is an abundant number, since it is smaller than the sum of its proper divisors (3168932450408).

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

2001431021232 is a wasteful number, since it uses less digits than its factorization.

2001431021232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41696479620 (or 41696479614 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2001431021232 its reverse (2321201341002), we get a palindrome (4322632362234).

The spelling of 2001431021232 in words is "two trillion, one billion, four hundred thirty-one million, twenty-one thousand, two hundred thirty-two".