3131140321 has 8 divisors (see below), whose sum is σ = 3314992320. Its totient is φ = 2949193872.

The previous prime is 3131140319. The next prime is 3131140339. The reversal of 3131140321 is 1230411313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3131140321 - 2¹ = 3131140319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (3131140361) 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, 473005 + ... + 479578.

It is an arithmetic number, because the mean of its divisors is an integer number (414374040).

Almost surely, 2^3131140321 is an apocalyptic number.

It is an amenable number.

3131140321 is a deficient number, since it is larger than the sum of its proper divisors (183851999).

3131140321 is a wasteful number, since it uses less digits than its factorization.

3131140321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952775.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 3131140321 is about 55956.5931861474. The cubic root of 3131140321 is about 1462.9658110151.

Adding to 3131140321 its reverse (1230411313), we get a palindrome (4361551634).

The spelling of 3131140321 in words is "three billion, one hundred thirty-one million, one hundred forty thousand, three hundred twenty-one".