321430040133421 has 16 divisors (see below), whose sum is σ = 345469211958528. Its totient is φ = 297969383980800.

The previous prime is 321430040133413. The next prime is 321430040133431. The reversal of 321430040133421 is 124331040034123.

It is not a de Polignac number, because 321430040133421 - 2³ = 321430040133413 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 (321430040133431) 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, 129181425 + ... + 131646118.

It is an arithmetic number, because the mean of its divisors is an integer number (21591825747408).

Almost surely, 2^{321430040133421} is an apocalyptic number.

It is an amenable number.

321430040133421 is a deficient number, since it is larger than the sum of its proper divisors (24039171825107).

321430040133421 is a wasteful number, since it uses less digits than its factorization.

321430040133421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260828652.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 321430040133421 its reverse (124331040034123), we get a palindrome (445761080167544).

The spelling of 321430040133421 in words is "three hundred twenty-one trillion, four hundred thirty billion, forty million, one hundred thirty-three thousand, four hundred twenty-one".