20243020413 has 32 divisors (see below), whose sum is σ = 35421834240. Its totient is φ = 9962386560.

The previous prime is 20243020409. The next prime is 20243020417. The reversal of 20243020413 is 31402034202.

It is an interprime number because it is at equal distance from previous prime (20243020409) and next prime (20243020417).

It is not a de Polignac number, because 20243020413 - 2² = 20243020409 is a prime.

It is a super-2 number, since 2×20243020413² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 20243020413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243020417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2301720 + ... + 2310497.

It is an arithmetic number, because the mean of its divisors is an integer number (1106932320).

Almost surely, 2^20243020413 is an apocalyptic number.

It is an amenable number.

20243020413 is a deficient number, since it is larger than the sum of its proper divisors (15178813827).

20243020413 is a wasteful number, since it uses less digits than its factorization.

20243020413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612257.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20243020413 its reverse (31402034202), we get a palindrome (51645054615).

The spelling of 20243020413 in words is "twenty billion, two hundred forty-three million, twenty thousand, four hundred thirteen".