431412320223021 has 16 divisors (see below), whose sum is σ = 585632865960000. Its totient is φ = 282411110784768.

The previous prime is 431412320223013. The next prime is 431412320223089. The reversal of 431412320223021 is 120322023214134.

It is a happy number.

It is not a de Polignac number, because 431412320223021 - 2³ = 431412320223013 is a prime.

It is a super-2 number, since 2×431412320223021² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 431412320223021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431412320221021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1389444396 + ... + 1389754853.

It is an arithmetic number, because the mean of its divisors is an integer number (36602054122500).

Almost surely, 2^{431412320223021} is an apocalyptic number.

It is an amenable number.

431412320223021 is a deficient number, since it is larger than the sum of its proper divisors (154220545736979).

431412320223021 is a wasteful number, since it uses less digits than its factorization.

431412320223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779200188.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 431412320223021 its reverse (120322023214134), we get a palindrome (551734343437155).

The spelling of 431412320223021 in words is "four hundred thirty-one trillion, four hundred twelve billion, three hundred twenty million, two hundred twenty-three thousand, twenty-one".