215015131223 has 2 divisors, whose sum is σ = 215015131224. Its totient is φ = 215015131222.

The previous prime is 215015131193. The next prime is 215015131277. The reversal of 215015131223 is 322131510512.

215015131223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215015131223 - 2¹⁸ = 215014869079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215015131192 and 215015131201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215015131423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107507565611 + 107507565612.

It is an arithmetic number, because the mean of its divisors is an integer number (107507565612).

Almost surely, 2^215015131223 is an apocalyptic number.

215015131223 is a deficient number, since it is larger than the sum of its proper divisors (1).

215015131223 is an equidigital number, since it uses as much as digits as its factorization.

215015131223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 215015131223 its reverse (322131510512), we get a palindrome (537146641735).

The spelling of 215015131223 in words is "two hundred fifteen billion, fifteen million, one hundred thirty-one thousand, two hundred twenty-three".