431311163306123 has 4 divisors (see below), whose sum is σ = 432189597447768. Its totient is φ = 430432729164480.

The previous prime is 431311163306099. The next prime is 431311163306141. The reversal of 431311163306123 is 321603361113134.

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-431311163306123 is a prime.

It is a super-2 number, since 2×431311163306123² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431311163306423) 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, 439217070086 + ... + 439217071067.

It is an arithmetic number, because the mean of its divisors is an integer number (108047399361942).

Almost surely, 2^{431311163306123} is an apocalyptic number.

431311163306123 is a deficient number, since it is larger than the sum of its proper divisors (878434141645).

431311163306123 is an equidigital number, since it uses as much as digits as its factorization.

431311163306123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878434141644.

The product of its (nonzero) digits is 69984, while the sum is 38.

The spelling of 431311163306123 in words is "four hundred thirty-one trillion, three hundred eleven billion, one hundred sixty-three million, three hundred six thousand, one hundred twenty-three".