431311133123 has 16 divisors (see below), whose sum is σ = 471934260000. Its totient is φ = 391794036480.

The previous prime is 431311133063. The next prime is 431311133147. The reversal of 431311133123 is 321331113134.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 431311133123 - 2⁸ = 431311132867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431311133092 and 431311133101.

It is not an unprimeable number, because it can be changed into a prime (431311133423) 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, 639248 + ... + 1127501.

It is an arithmetic number, because the mean of its divisors is an integer number (29495891250).

Almost surely, 2^431311133123 is an apocalyptic number.

431311133123 is a deficient number, since it is larger than the sum of its proper divisors (40623126877).

431311133123 is a wasteful number, since it uses less digits than its factorization.

431311133123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767062.

The product of its digits is 1944, while the sum is 26.

Adding to 431311133123 its reverse (321331113134), we get a palindrome (752642246257).

The spelling of 431311133123 in words is "four hundred thirty-one billion, three hundred eleven million, one hundred thirty-three thousand, one hundred twenty-three".