20233403011 has 4 divisors (see below), whose sum is σ = 20233738624. Its totient is φ = 20233067400.

The previous prime is 20233402957. The next prime is 20233403053. The reversal of 20233403011 is 11030433202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11030433202 = 2 ⋅5515216601.

It is a cyclic number.

It is not a de Polignac number, because 20233403011 - 2¹⁵ = 20233370243 is a prime.

It is a super-2 number, since 2×20233403011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20233403011.

It is not an unprimeable number, because it can be changed into a prime (20233403081) 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, 49635 + ... + 207196.

It is an arithmetic number, because the mean of its divisors is an integer number (5058434656).

Almost surely, 2^20233403011 is an apocalyptic number.

20233403011 is a deficient number, since it is larger than the sum of its proper divisors (335613).

20233403011 is an equidigital number, since it uses as much as digits as its factorization.

20233403011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335612.

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

Adding to 20233403011 its reverse (11030433202), we get a palindrome (31263836213).

The spelling of 20233403011 in words is "twenty billion, two hundred thirty-three million, four hundred three thousand, eleven".