2321402240581 has 4 divisors (see below), whose sum is σ = 2321560507500. Its totient is φ = 2321243973664.

The previous prime is 2321402240497. The next prime is 2321402240587. The reversal of 2321402240581 is 1850422041232.

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 1097956091556 + 1223446149025 = 1047834^2 + 1106095^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321402240581 - 2³³ = 2312812305989 is a prime.

It is a super-2 number, since 2×2321402240581² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321402240587) 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, 79111456 + ... + 79140793.

It is an arithmetic number, because the mean of its divisors is an integer number (580390126875).

Almost surely, 2^{2321402240581} is an apocalyptic number.

It is an amenable number.

2321402240581 is a deficient number, since it is larger than the sum of its proper divisors (158266919).

2321402240581 is a wasteful number, since it uses less digits than its factorization.

2321402240581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158266918.

The product of its (nonzero) digits is 30720, while the sum is 34.

The spelling of 2321402240581 in words is "two trillion, three hundred twenty-one billion, four hundred two million, two hundred forty thousand, five hundred eighty-one".