1823202023281 has 4 divisors (see below), whose sum is σ = 1841253528564. Its totient is φ = 1805150518000.

The previous prime is 1823202023273. The next prime is 1823202023311.

1823202023281 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1414650950881 + 408551072400 = 1189391^2 + 639180^2 .

It is a cyclic number.

It is not a de Polignac number, because 1823202023281 - 2³ = 1823202023273 is a prime.

It is a super-2 number, since 2×1823202023281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1823202023231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9025752490 + ... + 9025752691.

It is an arithmetic number, because the mean of its divisors is an integer number (460313382141).

Almost surely, 2^{1823202023281} is an apocalyptic number.

It is an amenable number.

1823202023281 is a deficient number, since it is larger than the sum of its proper divisors (18051505283).

1823202023281 is a wasteful number, since it uses less digits than its factorization.

1823202023281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18051505282.

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 1823202023281 in words is "one trillion, eight hundred twenty-three billion, two hundred two million, twenty-three thousand, two hundred eighty-one".