321424310031421 has 16 divisors (see below), whose sum is σ = 328150655490240. Its totient is φ = 314757375609600.

The previous prime is 321424310031371. The next prime is 321424310031439. The reversal of 321424310031421 is 124130013424123.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 321424310031421 - 2³³ = 321415720096829 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 (321424310031221) 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, 5713710 + ... + 25990288.

It is an arithmetic number, because the mean of its divisors is an integer number (20509415968140).

Almost surely, 2^{321424310031421} is an apocalyptic number.

It is an amenable number.

321424310031421 is a deficient number, since it is larger than the sum of its proper divisors (6726345458819).

321424310031421 is a wasteful number, since it uses less digits than its factorization.

321424310031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20278044.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 321424310031421 its reverse (124130013424123), we get a palindrome (445554323455544).

The spelling of 321424310031421 in words is "three hundred twenty-one trillion, four hundred twenty-four billion, three hundred ten million, thirty-one thousand, four hundred twenty-one".