1312111110311 has 8 divisors (see below), whose sum is σ = 1329250157760. Its totient is φ = 1295045779968.

The previous prime is 1312111110259. The next prime is 1312111110337. The reversal of 1312111110311 is 1130111112131.

It is a happy number.

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 1312111110311 - 2²² = 1312106916007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312111110311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312111110341) 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, 18393446 + ... + 18464643.

It is an arithmetic number, because the mean of its divisors is an integer number (166156269720).

Almost surely, 2^{1312111110311} is an apocalyptic number.

1312111110311 is a deficient number, since it is larger than the sum of its proper divisors (17139047449).

1312111110311 is an equidigital number, since it uses as much as digits as its factorization.

1312111110311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36858553.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 1312111110311 its reverse (1130111112131), we get a palindrome (2442222222442).

The spelling of 1312111110311 in words is "one trillion, three hundred twelve billion, one hundred eleven million, one hundred ten thousand, three hundred eleven".