23214220403 has 4 divisors (see below), whose sum is σ = 25324604088. Its totient is φ = 21103836720.

The previous prime is 23214220363. The next prime is 23214220433. The reversal of 23214220403 is 30402241232.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23214220403 is a prime.

It is a super-2 number, since 2×23214220403² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23214220433) 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, 1055191826 + ... + 1055191847.

It is an arithmetic number, because the mean of its divisors is an integer number (6331151022).

Almost surely, 2^23214220403 is an apocalyptic number.

23214220403 is a deficient number, since it is larger than the sum of its proper divisors (2110383685).

23214220403 is a wasteful number, since it uses less digits than its factorization.

23214220403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110383684.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 23214220403 its reverse (30402241232), we get a palindrome (53616461635).

The spelling of 23214220403 in words is "twenty-three billion, two hundred fourteen million, two hundred twenty thousand, four hundred three".