23203220437 has 2 divisors, whose sum is σ = 23203220438. Its totient is φ = 23203220436.

The previous prime is 23203220431. The next prime is 23203220477. The reversal of 23203220437 is 73402230232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13809540196 + 9393680241 = 117514^2 + 96921^2 .

It is a cyclic number.

It is not a de Polignac number, because 23203220437 - 2¹⁵ = 23203187669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23203220431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11601610218 + 11601610219.

It is an arithmetic number, because the mean of its divisors is an integer number (11601610219).

Almost surely, 2^23203220437 is an apocalyptic number.

It is an amenable number.

23203220437 is a deficient number, since it is larger than the sum of its proper divisors (1).

23203220437 is an equidigital number, since it uses as much as digits as its factorization.

23203220437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 28.

Adding to 23203220437 its reverse (73402230232), we get a palindrome (96605450669).

The spelling of 23203220437 in words is "twenty-three billion, two hundred three million, two hundred twenty thousand, four hundred thirty-seven".