20002013231 has 4 divisors (see below), whose sum is σ = 20058676512. Its totient is φ = 19945349952.

The previous prime is 20002013219. The next prime is 20002013263. The reversal of 20002013231 is 13231020002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20002013231 - 2⁶ = 20002013167 is a prime.

It is a super-2 number, since 2×20002013231² (a number of 21 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 (20002013201) 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, 28331111 + ... + 28331816.

It is an arithmetic number, because the mean of its divisors is an integer number (5014669128).

Almost surely, 2^20002013231 is an apocalyptic number.

20002013231 is a deficient number, since it is larger than the sum of its proper divisors (56663281).

20002013231 is an equidigital number, since it uses as much as digits as its factorization.

20002013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56663280.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20002013231 its reverse (13231020002), we get a palindrome (33233033233).

The spelling of 20002013231 in words is "twenty billion, two million, thirteen thousand, two hundred thirty-one".