431111055322021 has 4 divisors (see below), whose sum is σ = 431404128780544. Its totient is φ = 430817981863500.

The previous prime is 431111055321977. The next prime is 431111055322091. The reversal of 431111055322021 is 120223550111134.

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 431111055322021 - 2⁹ = 431111055321509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431111055322091) 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, 146536727055 + ... + 146536729996.

It is an arithmetic number, because the mean of its divisors is an integer number (107851032195136).

Almost surely, 2^{431111055322021} is an apocalyptic number.

It is an amenable number.

431111055322021 is a deficient number, since it is larger than the sum of its proper divisors (293073458523).

431111055322021 is a wasteful number, since it uses less digits than its factorization.

431111055322021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293073458522.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 431111055322021 in words is "four hundred thirty-one trillion, one hundred eleven billion, fifty-five million, three hundred twenty-two thousand, twenty-one".