123215315303 has 2 divisors, whose sum is σ = 123215315304. Its totient is φ = 123215315302.

The previous prime is 123215315287. The next prime is 123215315357. The reversal of 123215315303 is 303513512321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123215315303 - 2⁴ = 123215315287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123215315603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61607657651 + 61607657652.

It is an arithmetic number, because the mean of its divisors is an integer number (61607657652).

Almost surely, 2^123215315303 is an apocalyptic number.

123215315303 is a deficient number, since it is larger than the sum of its proper divisors (1).

123215315303 is an equidigital number, since it uses as much as digits as its factorization.

123215315303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 123215315303 its reverse (303513512321), we get a palindrome (426728827624).

The spelling of 123215315303 in words is "one hundred twenty-three billion, two hundred fifteen million, three hundred fifteen thousand, three hundred three".