1801231423421 has 8 divisors (see below), whose sum is σ = 1909110737664. Its totient is φ = 1693565945280.

The previous prime is 1801231423403. The next prime is 1801231423423. The reversal of 1801231423421 is 1243241321081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1801231423421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801231423423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53441675 + ... + 53475368.

It is an arithmetic number, because the mean of its divisors is an integer number (238638842208).

Almost surely, 2^{1801231423421} is an apocalyptic number.

It is an amenable number.

1801231423421 is a deficient number, since it is larger than the sum of its proper divisors (107879314243).

1801231423421 is a wasteful number, since it uses less digits than its factorization.

1801231423421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106918051.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 1801231423421 in words is "one trillion, eight hundred one billion, two hundred thirty-one million, four hundred twenty-three thousand, four hundred twenty-one".