1312111124 has 6 divisors (see below), whose sum is σ = 2296194474. Its totient is φ = 656055560.

The previous prime is 1312111123. The next prime is 1312111127. The reversal of 1312111124 is 4211112131.

It can be written as a sum of positive squares in only one way, i.e., 956788624 + 355322500 = 30932^2 + 18850^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312111123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164013887 + ... + 164013894.

It is an arithmetic number, because the mean of its divisors is an integer number (382699079).

Almost surely, 2^1312111124 is an apocalyptic number.

It is an amenable number.

1312111124 is a deficient number, since it is larger than the sum of its proper divisors (984083350).

1312111124 is a wasteful number, since it uses less digits than its factorization.

1312111124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328027785 (or 328027783 counting only the distinct ones).

The product of its digits is 48, while the sum is 17.

The square root of 1312111124 is about 36223.0744691833. The cubic root of 1312111124 is about 1094.7716415997.

Adding to 1312111124 its reverse (4211112131), we get a palindrome (5523223255).

The spelling of 1312111124 in words is "one billion, three hundred twelve million, one hundred eleven thousand, one hundred twenty-four".