1312111203311 has 8 divisors (see below), whose sum is σ = 1313291543760. Its totient is φ = 1310931084672.

The previous prime is 1312111203251. The next prime is 1312111203331. The reversal of 1312111203311 is 1133021112131.

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 1312111203311 - 2³⁸ = 1037233296367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312111203331) 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, 13186301 + ... + 13285433.

It is an arithmetic number, because the mean of its divisors is an integer number (164161442970).

Almost surely, 2^{1312111203311} is an apocalyptic number.

1312111203311 is a deficient number, since it is larger than the sum of its proper divisors (1180340449).

1312111203311 is a wasteful number, since it uses less digits than its factorization.

1312111203311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110905.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1312111203311 its reverse (1133021112131), we get a palindrome (2445132315442).

The spelling of 1312111203311 in words is "one trillion, three hundred twelve billion, one hundred eleven million, two hundred three thousand, three hundred eleven".