431433330121 has 4 divisors (see below), whose sum is σ = 431436241044. Its totient is φ = 431430419200.

The previous prime is 431433330067. The next prime is 431433330143. The reversal of 431433330121 is 121033334134.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77395240000 + 354038090121 = 278200^2 + 595011^2 .

It is a cyclic number.

It is not a de Polignac number, because 431433330121 - 2¹⁹ = 431432805833 is a prime.

It is a super-2 number, since 2×431433330121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 431433330121.

It is not an unprimeable number, because it can be changed into a prime (431433330151) 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, 1220500 + ... + 1533781.

It is an arithmetic number, because the mean of its divisors is an integer number (107859060261).

Almost surely, 2^431433330121 is an apocalyptic number.

It is an amenable number.

431433330121 is a deficient number, since it is larger than the sum of its proper divisors (2910923).

431433330121 is a wasteful number, since it uses less digits than its factorization.

431433330121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910922.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 431433330121 its reverse (121033334134), we get a palindrome (552466664255).

The spelling of 431433330121 in words is "four hundred thirty-one billion, four hundred thirty-three million, three hundred thirty thousand, one hundred twenty-one".