1312111110031 has 8 divisors (see below), whose sum is σ = 1312711747200. Its totient is φ = 1311510610008.

The previous prime is 1312111109983. The next prime is 1312111110077. The reversal of 1312111110031 is 1300111112131.

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 1312111110031 - 2¹⁹ = 1312110585743 is a prime.

It is a super-2 number, since 2×1312111110031² (a number of 25 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 = 1312111109987 and 1312111110014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312111110931) 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, 22313190 + ... + 22371916.

It is an arithmetic number, because the mean of its divisors is an integer number (164088968400).

Almost surely, 2^{1312111110031} is an apocalyptic number.

1312111110031 is a deficient number, since it is larger than the sum of its proper divisors (600637169).

1312111110031 is an equidigital number, since it uses as much as digits as its factorization.

1312111110031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68573.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 1312111110031 its reverse (1300111112131), we get a palindrome (2612222222162).

The spelling of 1312111110031 in words is "one trillion, three hundred twelve billion, one hundred eleven million, one hundred ten thousand, thirty-one".