1312112002031 has 32 divisors (see below), whose sum is σ = 1428883156800. Its totient is φ = 1200224323584.

The previous prime is 1312112002013. The next prime is 1312112002051. The reversal of 1312112002031 is 1302002112131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312112002031 is a prime.

It is a super-2 number, since 2×1312112002031² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312112002051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50061776 + ... + 50087978.

It is an arithmetic number, because the mean of its divisors is an integer number (44652598650).

Almost surely, 2^{1312112002031} is an apocalyptic number.

1312112002031 is a deficient number, since it is larger than the sum of its proper divisors (116771154769).

1312112002031 is a wasteful number, since it uses less digits than its factorization.

1312112002031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26795.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1312112002031 its reverse (1302002112131), we get a palindrome (2614114114162).

The spelling of 1312112002031 in words is "one trillion, three hundred twelve billion, one hundred twelve million, two thousand, thirty-one".