2013231231331 has 4 divisors (see below), whose sum is σ = 2031047437032. Its totient is φ = 1995415025632.

The previous prime is 2013231231287. The next prime is 2013231231359. The reversal of 2013231231331 is 1331321323102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2013231231331 is a prime.

It is a super-2 number, since 2×2013231231331² (a number of 25 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 = 2013231231296 and 2013231231305.

It is not an unprimeable number, because it can be changed into a prime (2013231231631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8908102681 + ... + 8908102906.

It is an arithmetic number, because the mean of its divisors is an integer number (507761859258).

Almost surely, 2^{2013231231331} is an apocalyptic number.

2013231231331 is a deficient number, since it is larger than the sum of its proper divisors (17816205701).

2013231231331 is a wasteful number, since it uses less digits than its factorization.

2013231231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17816205700.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 2013231231331 its reverse (1331321323102), we get a palindrome (3344552554433).

The spelling of 2013231231331 in words is "two trillion, thirteen billion, two hundred thirty-one million, two hundred thirty-one thousand, three hundred thirty-one".