13020311231023 has 8 divisors (see below), whose sum is σ = 13028837493440. Its totient is φ = 13011785580960.

The previous prime is 13020311230963. The next prime is 13020311231047. The reversal of 13020311231023 is 32013211302031.

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-13020311231023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13020311230985 and 13020311231003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020311231093) 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, 47142013 + ... + 47417401.

It is an arithmetic number, because the mean of its divisors is an integer number (1628604686680).

Almost surely, 2^{13020311231023} is an apocalyptic number.

13020311231023 is a deficient number, since it is larger than the sum of its proper divisors (8526262417).

13020311231023 is a wasteful number, since it uses less digits than its factorization.

13020311231023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306177.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13020311231023 its reverse (32013211302031), we get a palindrome (45033522533054).

The spelling of 13020311231023 in words is "thirteen trillion, twenty billion, three hundred eleven million, two hundred thirty-one thousand, twenty-three".