1312113123 has 12 divisors (see below), whose sum is σ = 1895809968. Its totient is φ = 874494960.

The previous prime is 1312113109. The next prime is 1312113163. The reversal of 1312113123 is 3213112131.

It is not a de Polignac number, because 1312113123 - 2¹⁷ = 1311982051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312113096 and 1312113105.

It is not an unprimeable number, because it can be changed into a prime (1312113163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16561 + ... + 53837.

It is an arithmetic number, because the mean of its divisors is an integer number (157984164).

Almost surely, 2^1312113123 is an apocalyptic number.

1312113123 is a deficient number, since it is larger than the sum of its proper divisors (583696845).

1312113123 is a wasteful number, since it uses less digits than its factorization.

1312113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41194 (or 41191 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1312113123 is about 36223.1020620819. The cubic root of 1312113123 is about 1094.7721975606.

Adding to 1312113123 its reverse (3213112131), we get a palindrome (4525225254).

It can be divided in two parts, 13121 and 13123, that added together give a square (26244 = 162²).

The spelling of 1312113123 in words is "one billion, three hundred twelve million, one hundred thirteen thousand, one hundred twenty-three".