431122220021 has 8 divisors (see below), whose sum is σ = 469461583200. Its totient is φ = 394347728880.

The previous prime is 431122220017. The next prime is 431122220033. The reversal of 431122220021 is 120022221134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 431122220021 - 2² = 431122220017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431122219975 and 431122220002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431122228021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391217435 + ... + 391218536.

It is an arithmetic number, because the mean of its divisors is an integer number (58682697900).

Almost surely, 2^431122220021 is an apocalyptic number.

It is an amenable number.

431122220021 is a deficient number, since it is larger than the sum of its proper divisors (38339363179).

431122220021 is a wasteful number, since it uses less digits than its factorization.

431122220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782436019.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 431122220021 its reverse (120022221134), we get a palindrome (551144441155).

The spelling of 431122220021 in words is "four hundred thirty-one billion, one hundred twenty-two million, two hundred twenty thousand, twenty-one".