1312011013231 has 8 divisors (see below), whose sum is σ = 1371151548000. Its totient is φ = 1253045193312.

The previous prime is 1312011013189. The next prime is 1312011013279. The reversal of 1312011013231 is 1323101102131.

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 1312011013231 - 2²¹ = 1312008916079 is a prime.

It is a super-3 number, since 3×1312011013231³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312011013199 and 1312011013208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312011073231) 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, 43663356 + ... + 43693393.

It is an arithmetic number, because the mean of its divisors is an integer number (171393943500).

Almost surely, 2^{1312011013231} is an apocalyptic number.

1312011013231 is a deficient number, since it is larger than the sum of its proper divisors (59140534769).

1312011013231 is an equidigital number, since it uses as much as digits as its factorization.

1312011013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87357425.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1312011013231 its reverse (1323101102131), we get a palindrome (2635112115362).

The spelling of 1312011013231 in words is "one trillion, three hundred twelve billion, eleven million, thirteen thousand, two hundred thirty-one".