321031431340 has 48 divisors (see below), whose sum is σ = 675119491200. Its totient is φ = 128231101440.

The previous prime is 321031431307. The next prime is 321031431341. The reversal of 321031431340 is 43134130123.

It is a super-2 number, since 2×321031431340² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321031431341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58912936 + ... + 58918384.

It is an arithmetic number, because the mean of its divisors is an integer number (14064989400).

Almost surely, 2^321031431340 is an apocalyptic number.

It is an amenable number.

321031431340 is an abundant number, since it is smaller than the sum of its proper divisors (354088059860).

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

321031431340 is a wasteful number, since it uses less digits than its factorization.

321031431340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082 (or 9080 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 321031431340 its reverse (43134130123), we get a palindrome (364165561463).

The spelling of 321031431340 in words is "three hundred twenty-one billion, thirty-one million, four hundred thirty-one thousand, three hundred forty".