4321723557231 has 16 divisors (see below), whose sum is σ = 6402601730400. Its totient is φ = 2881127297664.

The previous prime is 4321723557197. The next prime is 4321723557241. The reversal of 4321723557231 is 1327553271234.

4321723557231 is a `hidden beast` number, since 4 + 3 + 2 + 1 + 72 + 3 + 5 + 572 + 3 + 1 = 666.

It is not a de Polignac number, because 4321723557231 - 2⁹ = 4321723556719 is a prime.

It is a super-2 number, since 2×4321723557231² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4321723557241) 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, 3563365 + ... + 4619633.

It is an arithmetic number, because the mean of its divisors is an integer number (400162608150).

Almost surely, 2^{4321723557231} is an apocalyptic number.

4321723557231 is a deficient number, since it is larger than the sum of its proper divisors (2080878173169).

4321723557231 is a wasteful number, since it uses less digits than its factorization.

4321723557231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207815 (or 1207809 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 45.

The spelling of 4321723557231 in words is "four trillion, three hundred twenty-one billion, seven hundred twenty-three million, five hundred fifty-seven thousand, two hundred thirty-one".