321214431 has 8 divisors (see below), whose sum is σ = 428809600. Its totient is φ = 213881112.

The previous prime is 321214417. The next prime is 321214477. The reversal of 321214431 is 134412123.

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

It is not a de Polignac number, because 321214431 - 2⁶ = 321214367 is a prime.

It is a super-2 number, since 2×321214431² = 206357421365307522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321214398 and 321214407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321214331) 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, 62581 + ... + 67518.

It is an arithmetic number, because the mean of its divisors is an integer number (53601200).

Almost surely, 2^321214431 is an apocalyptic number.

321214431 is a deficient number, since it is larger than the sum of its proper divisors (107595169).

321214431 is a wasteful number, since it uses less digits than its factorization.

321214431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130925.

The product of its digits is 576, while the sum is 21.

The square root of 321214431 is about 17922.4560537891. The cubic root of 321214431 is about 684.8545562945.

Adding to 321214431 its reverse (134412123), we get a palindrome (455626554).

The spelling of 321214431 in words is "three hundred twenty-one million, two hundred fourteen thousand, four hundred thirty-one".