154203215413231 has 2 divisors, whose sum is σ = 154203215413232. Its totient is φ = 154203215413230.

The previous prime is 154203215413223. The next prime is 154203215413327. The reversal of 154203215413231 is 132314512302451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154203215413231 - 2³ = 154203215413223 is a prime.

It is a super-2 number, since 2×154203215413231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154203215413831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77101607706615 + 77101607706616.

It is an arithmetic number, because the mean of its divisors is an integer number (77101607706616).

Almost surely, 2^{154203215413231} is an apocalyptic number.

154203215413231 is a deficient number, since it is larger than the sum of its proper divisors (1).

154203215413231 is an equidigital number, since it uses as much as digits as its factorization.

154203215413231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 154203215413231 its reverse (132314512302451), we get a palindrome (286517727715682).

The spelling of 154203215413231 in words is "one hundred fifty-four trillion, two hundred three billion, two hundred fifteen million, four hundred thirteen thousand, two hundred thirty-one".