731223472173421 has 8 divisors (see below), whose sum is σ = 744121975824864. Its totient is φ = 718422315719760.

The previous prime is 731223472173413. The next prime is 731223472173433. The reversal of 731223472173421 is 124371274322137.

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 731223472173421 - 2³ = 731223472173413 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 (731223472173221) 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, 24336784291 + ... + 24336814336.

It is an arithmetic number, because the mean of its divisors is an integer number (93015246978108).

Almost surely, 2^{731223472173421} is an apocalyptic number.

It is an amenable number.

731223472173421 is a deficient number, since it is larger than the sum of its proper divisors (12898503651443).

731223472173421 is a wasteful number, since it uses less digits than its factorization.

731223472173421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48673598891.

The product of its digits is 2370816, while the sum is 49.

The spelling of 731223472173421 in words is "seven hundred thirty-one trillion, two hundred twenty-three billion, four hundred seventy-two million, one hundred seventy-three thousand, four hundred twenty-one".