23031222236261 has 2 divisors, whose sum is σ = 23031222236262. Its totient is φ = 23031222236260.

The previous prime is 23031222236227. The next prime is 23031222236279. The reversal of 23031222236261 is 16263222213032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19860222903361 + 3170999332900 = 4456481^2 + 1780730^2 .

It is a cyclic number.

It is not a de Polignac number, because 23031222236261 - 2³⁸ = 22756344329317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23031222238261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11515611118130 + 11515611118131.

It is an arithmetic number, because the mean of its divisors is an integer number (11515611118131).

Almost surely, 2^{23031222236261} is an apocalyptic number.

It is an amenable number.

23031222236261 is a deficient number, since it is larger than the sum of its proper divisors (1).

23031222236261 is an equidigital number, since it uses as much as digits as its factorization.

23031222236261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 35.

Adding to 23031222236261 its reverse (16263222213032), we get a palindrome (39294444449293).

The spelling of 23031222236261 in words is "twenty-three trillion, thirty-one billion, two hundred twenty-two million, two hundred thirty-six thousand, two hundred sixty-one".