31144140313 has 8 divisors (see below), whose sum is σ = 36588920256. Its totient is φ = 26134942800.

The previous prime is 31144140289. The next prime is 31144140347. The reversal of 31144140313 is 31304144113.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31144140313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31144140373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108895453 + ... + 108895738.

It is an arithmetic number, because the mean of its divisors is an integer number (4573615032).

Almost surely, 2^31144140313 is an apocalyptic number.

It is an amenable number.

31144140313 is a deficient number, since it is larger than the sum of its proper divisors (5444779943).

31144140313 is a wasteful number, since it uses less digits than its factorization.

31144140313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217791215.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 31144140313 its reverse (31304144113), we get a palindrome (62448284426).

The spelling of 31144140313 in words is "thirty-one billion, one hundred forty-four million, one hundred forty thousand, three hundred thirteen".