321031143140 has 48 divisors (see below), whose sum is σ = 687318171120. Its totient is φ = 125910220800.

The previous prime is 321031143077. The next prime is 321031143157. The reversal of 321031143140 is 41341130123.

It can be written as a sum of positive squares in 8 ways, for example, as 85151908864 + 235879234276 = 291808^2 + 485674^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1602476 + ... + 1791644.

It is an arithmetic number, because the mean of its divisors is an integer number (14319128565).

Almost surely, 2^321031143140 is an apocalyptic number.

It is an amenable number.

321031143140 is an abundant number, since it is smaller than the sum of its proper divisors (366287027980).

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

321031143140 is a wasteful number, since it uses less digits than its factorization.

321031143140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190832 (or 190830 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 321031143140 its reverse (41341130123), we get a palindrome (362372273263).

The spelling of 321031143140 in words is "three hundred twenty-one billion, thirty-one million, one hundred forty-three thousand, one hundred forty".