13240312331 has 8 divisors (see below), whose sum is σ = 13531552320. Its totient is φ = 12949469568.

The previous prime is 13240312321. The next prime is 13240312369. The reversal of 13240312331 is 13321304231.

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 13240312331 - 2¹⁴ = 13240295947 is a prime.

It is a super-2 number, since 2×13240312331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13240312297 and 13240312306.

It is not an unprimeable number, because it can be changed into a prime (13240312321) 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, 31406 + ... + 165731.

It is an arithmetic number, because the mean of its divisors is an integer number (1691444040).

Almost surely, 2^13240312331 is an apocalyptic number.

13240312331 is a deficient number, since it is larger than the sum of its proper divisors (291239989).

13240312331 is a wasteful number, since it uses less digits than its factorization.

13240312331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198613.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 13240312331 its reverse (13321304231), we get a palindrome (26561616562).

The spelling of 13240312331 in words is "thirteen billion, two hundred forty million, three hundred twelve thousand, three hundred thirty-one".