13001312312231 has 4 divisors (see below), whose sum is σ = 13031477770464. Its totient is φ = 12971146854000.

The previous prime is 13001312312173. The next prime is 13001312312237. The reversal of 13001312312231 is 13221321310031.

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

It is a cyclic number.

It is not a de Polignac number, because 13001312312231 - 2¹⁴ = 13001312295847 is a prime.

It is a super-2 number, since 2×13001312312231² (a number of 27 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 = 13001312312197 and 13001312312206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001312312237) 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, 15082728470 + ... + 15082729331.

It is an arithmetic number, because the mean of its divisors is an integer number (3257869442616).

Almost surely, 2^{13001312312231} is an apocalyptic number.

13001312312231 is a deficient number, since it is larger than the sum of its proper divisors (30165458233).

13001312312231 is an equidigital number, since it uses as much as digits as its factorization.

13001312312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30165458232.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 13001312312231 its reverse (13221321310031), we get a palindrome (26222633622262).

The spelling of 13001312312231 in words is "thirteen trillion, one billion, three hundred twelve million, three hundred twelve thousand, two hundred thirty-one".