1312231332311 has 8 divisors (see below), whose sum is σ = 1333717363584. Its totient is φ = 1290828742840.

The previous prime is 1312231332281. The next prime is 1312231332319. The reversal of 1312231332311 is 1132331322131.

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-1312231332311 is a prime.

It is a super-2 number, since 2×1312231332311² (a number of 25 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 (1312231332319) 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, 20828741 + ... + 20891646.

It is an arithmetic number, because the mean of its divisors is an integer number (166714670448).

Almost surely, 2^{1312231332311} is an apocalyptic number.

1312231332311 is a deficient number, since it is larger than the sum of its proper divisors (21486031273).

1312231332311 is an equidigital number, since it uses as much as digits as its factorization.

1312231332311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41720901.

The product of its digits is 1944, while the sum is 26.

Adding to 1312231332311 its reverse (1132331322131), we get a palindrome (2444562654442).

The spelling of 1312231332311 in words is "one trillion, three hundred twelve billion, two hundred thirty-one million, three hundred thirty-two thousand, three hundred eleven".