23221131007 has 2 divisors, whose sum is σ = 23221131008. Its totient is φ = 23221131006.

The previous prime is 23221130981. The next prime is 23221131047. The reversal of 23221131007 is 70013112232.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23221131007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23221131047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610565503 + 11610565504.

It is an arithmetic number, because the mean of its divisors is an integer number (11610565504).

Almost surely, 2^23221131007 is an apocalyptic number.

23221131007 is a deficient number, since it is larger than the sum of its proper divisors (1).

23221131007 is an equidigital number, since it uses as much as digits as its factorization.

23221131007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 23221131007 its reverse (70013112232), we get a palindrome (93234243239).

The spelling of 23221131007 in words is "twenty-three billion, two hundred twenty-one million, one hundred thirty-one thousand, seven".