20232312013 has 4 divisors (see below), whose sum is σ = 21297170560. Its totient is φ = 19167453468.

The previous prime is 20232311987. The next prime is 20232312019. The reversal of 20232312013 is 31021323202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20232312013 - 2²¹ = 20230214861 is a prime.

It is a super-2 number, since 2×20232312013² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1064858527 = 20232312013 / (2 + 0 + 2 + 3 + 2 + 3 + 1 + 2 + 0 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232312019) 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, 532429245 + ... + 532429282.

It is an arithmetic number, because the mean of its divisors is an integer number (5324292640).

Almost surely, 2^20232312013 is an apocalyptic number.

It is an amenable number.

20232312013 is a deficient number, since it is larger than the sum of its proper divisors (1064858547).

20232312013 is a wasteful number, since it uses less digits than its factorization.

20232312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064858546.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20232312013 its reverse (31021323202), we get a palindrome (51253635215).

The spelling of 20232312013 in words is "twenty billion, two hundred thirty-two million, three hundred twelve thousand, thirteen".