63215123 has 2 divisors, whose sum is σ = 63215124. Its totient is φ = 63215122.

The previous prime is 63215111. The next prime is 63215171. The reversal of 63215123 is 32151236.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63215123 is a prime.

It is not a weakly prime, because it can be changed into another prime (63215723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31607561 + 31607562.

It is an arithmetic number, because the mean of its divisors is an integer number (31607562).

Almost surely, 2^63215123 is an apocalyptic number.

63215123 is a deficient number, since it is larger than the sum of its proper divisors (1).

63215123 is an equidigital number, since it uses as much as digits as its factorization.

63215123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 63215123 is about 7950.7938597350. The cubic root of 63215123 is about 398.3581092919.

Adding to 63215123 its reverse (32151236), we get a palindrome (95366359).

The spelling of 63215123 in words is "sixty-three million, two hundred fifteen thousand, one hundred twenty-three".