321488856340 has 24 divisors (see below), whose sum is σ = 677636373960. Its totient is φ = 128117490048.

The previous prime is 321488856307. The next prime is 321488856371. The reversal of 321488856340 is 43658884123.

It can be written as a sum of positive squares in 4 ways, for example, as 34780012036 + 286708844304 = 186494^2 + 535452^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29872767 + ... + 29883526.

It is an arithmetic number, because the mean of its divisors is an integer number (28234848915).

Almost surely, 2^321488856340 is an apocalyptic number.

It is an amenable number.

321488856340 is an abundant number, since it is smaller than the sum of its proper divisors (356147517620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321488856340 is a wasteful number, since it uses less digits than its factorization.

321488856340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59756571 (or 59756569 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 52.

The spelling of 321488856340 in words is "three hundred twenty-one billion, four hundred eighty-eight million, eight hundred fifty-six thousand, three hundred forty".