23105350421 has 2 divisors, whose sum is σ = 23105350422. Its totient is φ = 23105350420.

The previous prime is 23105350397. The next prime is 23105350423. The reversal of 23105350421 is 12405350132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19125507025 + 3979843396 = 138295^2 + 63086^2 .

It is a cyclic number.

It is not a de Polignac number, because 23105350421 - 2⁶ = 23105350357 is a prime.

Together with 23105350423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23105350423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11552675210 + 11552675211.

It is an arithmetic number, because the mean of its divisors is an integer number (11552675211).

Almost surely, 2^23105350421 is an apocalyptic number.

It is an amenable number.

23105350421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23105350421 is an equidigital number, since it uses as much as digits as its factorization.

23105350421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 23105350421 in words is "twenty-three billion, one hundred five million, three hundred fifty thousand, four hundred twenty-one".