431234242121 has 4 divisors (see below), whose sum is σ = 453930781200. Its totient is φ = 408537703044.

The previous prime is 431234242081. The next prime is 431234242123. The reversal of 431234242121 is 121242432134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121242432134 = 2 ⋅60621216067.

It is a cyclic number.

It is not a de Polignac number, because 431234242121 - 2³⁴ = 414054372937 is a prime.

It is a super-3 number, since 3×431234242121³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431234242123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11348269511 + ... + 11348269548.

It is an arithmetic number, because the mean of its divisors is an integer number (113482695300).

Almost surely, 2^431234242121 is an apocalyptic number.

It is an amenable number.

431234242121 is a deficient number, since it is larger than the sum of its proper divisors (22696539079).

431234242121 is a wasteful number, since it uses less digits than its factorization.

431234242121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22696539078.

The product of its digits is 9216, while the sum is 29.

Adding to 431234242121 its reverse (121242432134), we get a palindrome (552476674255).

The spelling of 431234242121 in words is "four hundred thirty-one billion, two hundred thirty-four million, two hundred forty-two thousand, one hundred twenty-one".