321405134324 has 24 divisors (see below), whose sum is σ = 611640618120. Its totient is φ = 147161650176.

The previous prime is 321405134299. The next prime is 321405134327. The reversal of 321405134324 is 423431504123.

It can be written as a sum of positive squares in 4 ways, for example, as 259826711824 + 61578422500 = 509732^2 + 248150^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321405134327) 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, 63869729 + ... + 63874760.

It is an arithmetic number, because the mean of its divisors is an integer number (25485025755).

Almost surely, 2^321405134324 is an apocalyptic number.

321405134324 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

321405134324 is a deficient number, since it is larger than the sum of its proper divisors (290235483796).

321405134324 is a wasteful number, since it uses less digits than its factorization.

321405134324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127744547 (or 127744545 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 321405134324 its reverse (423431504123), we get a palindrome (744836638447).

The spelling of 321405134324 in words is "three hundred twenty-one billion, four hundred five million, one hundred thirty-four thousand, three hundred twenty-four".