23212231333531 has 2 divisors, whose sum is σ = 23212231333532. Its totient is φ = 23212231333530.

The previous prime is 23212231333523. The next prime is 23212231333541. The reversal of 23212231333531 is 13533313221232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23212231333531 - 2³ = 23212231333523 is a prime.

It is a super-2 number, since 2×23212231333531² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23212231333541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11606115666765 + 11606115666766.

It is an arithmetic number, because the mean of its divisors is an integer number (11606115666766).

Almost surely, 2^{23212231333531} is an apocalyptic number.

23212231333531 is a deficient number, since it is larger than the sum of its proper divisors (1).

23212231333531 is an equidigital number, since it uses as much as digits as its factorization.

23212231333531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 34.

Adding to 23212231333531 its reverse (13533313221232), we get a palindrome (36745544554763).

The spelling of 23212231333531 in words is "twenty-three trillion, two hundred twelve billion, two hundred thirty-one million, three hundred thirty-three thousand, five hundred thirty-one".