431196121 has 4 divisors (see below), whose sum is σ = 437631952. Its totient is φ = 424760292.

The previous prime is 431196097. The next prime is 431196133. The reversal of 431196121 is 121691134.

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.

It is a cyclic number.

It is not a de Polignac number, because 431196121 - 2¹¹ = 431194073 is a prime.

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 431196121.

It is not an unprimeable number, because it can be changed into a prime (431196421) 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, 3217815 + ... + 3217948.

It is an arithmetic number, because the mean of its divisors is an integer number (109407988).

Almost surely, 2^431196121 is an apocalyptic number.

It is an amenable number.

431196121 is a deficient number, since it is larger than the sum of its proper divisors (6435831).

431196121 is an equidigital number, since it uses as much as digits as its factorization.

431196121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6435830.

The product of its digits is 1296, while the sum is 28.

The square root of 431196121 is about 20765.2623628983. The cubic root of 431196121 is about 755.4834387539.

The spelling of 431196121 in words is "four hundred thirty-one million, one hundred ninety-six thousand, one hundred twenty-one".