15235320223 has 2 divisors, whose sum is σ = 15235320224. Its totient is φ = 15235320222.

The previous prime is 15235320211. The next prime is 15235320227. The reversal of 15235320223 is 32202353251.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (32202353251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15235320223 - 2⁹ = 15235319711 is a prime.

It is a super-2 number, since 2×15235320223² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15235320191 and 15235320200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15235320227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7617660111 + 7617660112.

It is an arithmetic number, because the mean of its divisors is an integer number (7617660112).

Almost surely, 2^15235320223 is an apocalyptic number.

15235320223 is a deficient number, since it is larger than the sum of its proper divisors (1).

15235320223 is an equidigital number, since it uses as much as digits as its factorization.

15235320223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 15235320223 its reverse (32202353251), we get a palindrome (47437673474).

The spelling of 15235320223 in words is "fifteen billion, two hundred thirty-five million, three hundred twenty thousand, two hundred twenty-three".