231303133120013 has 4 divisors (see below), whose sum is σ = 232270928656320. Its totient is φ = 230335337583708.

The previous prime is 231303133119979. The next prime is 231303133120021. The reversal of 231303133120013 is 310021331303132.

231303133120013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231303133120013 - 2¹⁰ = 231303133118989 is a prime.

It is a super-2 number, since 2×231303133120013² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231303133120513) 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, 483897767795 + ... + 483897768272.

It is an arithmetic number, because the mean of its divisors is an integer number (58067732164080).

Almost surely, 2^{231303133120013} is an apocalyptic number.

It is an amenable number.

231303133120013 is a deficient number, since it is larger than the sum of its proper divisors (967795536307).

231303133120013 is an equidigital number, since it uses as much as digits as its factorization.

231303133120013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967795536306.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 231303133120013 its reverse (310021331303132), we get a palindrome (541324464423145).

The spelling of 231303133120013 in words is "two hundred thirty-one trillion, three hundred three billion, one hundred thirty-three million, one hundred twenty thousand, thirteen".