23040022013 has 4 divisors (see below), whose sum is σ = 23042322108. Its totient is φ = 23037721920.

The previous prime is 23040022009. The next prime is 23040022043. The reversal of 23040022013 is 31022004032.

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 11224766809 + 11815255204 = 105947^2 + 108698^2 .

It is a cyclic number.

It is not a de Polignac number, because 23040022013 - 2² = 23040022009 is a prime.

It is a super-2 number, since 2×23040022013² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23040021982 and 23040022000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23040022043) 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, 1134956 + ... + 1155077.

It is an arithmetic number, because the mean of its divisors is an integer number (5760580527).

Almost surely, 2^23040022013 is an apocalyptic number.

It is an amenable number.

23040022013 is a deficient number, since it is larger than the sum of its proper divisors (2300095).

23040022013 is a wasteful number, since it uses less digits than its factorization.

23040022013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300094.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 23040022013 its reverse (31022004032), we get a palindrome (54062026045).

The spelling of 23040022013 in words is "twenty-three billion, forty million, twenty-two thousand, thirteen".