1031312312011 has 16 divisors (see below), whose sum is σ = 1093705493760. Its totient is φ = 969741439200.

The previous prime is 1031312311999. The next prime is 1031312312059. The reversal of 1031312312011 is 1102132131301.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031312312011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1031312312011.

It is not an unprimeable number, because it can be changed into a prime (1031312312311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3254085 + ... + 3556921.

It is an arithmetic number, because the mean of its divisors is an integer number (68356593360).

Almost surely, 2^{1031312312011} is an apocalyptic number.

1031312312011 is a deficient number, since it is larger than the sum of its proper divisors (62393181749).

1031312312011 is a wasteful number, since it uses less digits than its factorization.

1031312312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304194.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1031312312011 its reverse (1102132131301), we get a palindrome (2133444443312).

It can be divided in two parts, 103131 and 2312011, that added together give a palindrome (2415142).

The spelling of 1031312312011 in words is "one trillion, thirty-one billion, three hundred twelve million, three hundred twelve thousand, eleven".