23212202231 has 4 divisors (see below), whose sum is σ = 23217289392. Its totient is φ = 23207115072.

The previous prime is 23212202213. The next prime is 23212202249. The reversal of 23212202231 is 13220221232.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (23212202213) and next prime (23212202249).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23212202231 is a prime.

It is a super-2 number, since 2×23212202231² (a number of 22 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 (23212202731) 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, 2536730 + ... + 2545863.

It is an arithmetic number, because the mean of its divisors is an integer number (5804322348).

Almost surely, 2^23212202231 is an apocalyptic number.

23212202231 is a deficient number, since it is larger than the sum of its proper divisors (5087161).

23212202231 is an equidigital number, since it uses as much as digits as its factorization.

23212202231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087160.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23212202231 its reverse (13220221232), we get a palindrome (36432423463).

The spelling of 23212202231 in words is "twenty-three billion, two hundred twelve million, two hundred two thousand, two hundred thirty-one".