512223200154431 has 4 divisors (see below), whose sum is σ = 512223429715200. Its totient is φ = 512222970593664.

The previous prime is 512223200154401. The next prime is 512223200154487. The reversal of 512223200154431 is 134451002322215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512223200154431 is a prime.

It is a super-2 number, since 2×512223200154431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 512223200154391 and 512223200154400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512223200154401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111400226 + ... + 115907103.

It is an arithmetic number, because the mean of its divisors is an integer number (128055857428800).

Almost surely, 2^{512223200154431} is an apocalyptic number.

512223200154431 is a deficient number, since it is larger than the sum of its proper divisors (229560769).

512223200154431 is a wasteful number, since it uses less digits than its factorization.

512223200154431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229560768.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 512223200154431 its reverse (134451002322215), we get a palindrome (646674202476646).

The spelling of 512223200154431 in words is "five hundred twelve trillion, two hundred twenty-three billion, two hundred million, one hundred fifty-four thousand, four hundred thirty-one".