154203215422231 has 16 divisors (see below), whose sum is σ = 161168627233440. Its totient is φ = 147348930556800.

The previous prime is 154203215422229. The next prime is 154203215422247. The reversal of 154203215422231 is 132224512302451.

It is a cyclic number.

It is not a de Polignac number, because 154203215422231 - 2¹ = 154203215422229 is a prime.

It is a super-2 number, since 2×154203215422231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154203215422211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4341456 + ... + 18090181.

It is an arithmetic number, because the mean of its divisors is an integer number (10073039202090).

Almost surely, 2^{154203215422231} is an apocalyptic number.

154203215422231 is a deficient number, since it is larger than the sum of its proper divisors (6965411811209).

154203215422231 is a wasteful number, since it uses less digits than its factorization.

154203215422231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22434114.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 154203215422231 its reverse (132224512302451), we get a palindrome (286427727724682).

The spelling of 154203215422231 in words is "one hundred fifty-four trillion, two hundred three billion, two hundred fifteen million, four hundred twenty-two thousand, two hundred thirty-one".