1031311313123 has 16 divisors (see below), whose sum is σ = 1269630720960. Its totient is φ = 815773977216.

The previous prime is 1031311313111. The next prime is 1031311313129. The reversal of 1031311313123 is 3213131131301.

It is a cyclic number.

It is not a de Polignac number, because 1031311313123 - 2¹⁰ = 1031311312099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1031311313129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1090208 + ... + 1803101.

It is an arithmetic number, because the mean of its divisors is an integer number (79351920060).

Almost surely, 2^{1031311313123} is an apocalyptic number.

1031311313123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1031311313123 is a deficient number, since it is larger than the sum of its proper divisors (238319407837).

1031311313123 is a wasteful number, since it uses less digits than its factorization.

1031311313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897246.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 1031311313123 its reverse (3213131131301), we get a palindrome (4244442444424).

The spelling of 1031311313123 in words is "one trillion, thirty-one billion, three hundred eleven million, three hundred thirteen thousand, one hundred twenty-three".