1311142113 has 64 divisors (see below), whose sum is σ = 2070700800. Its totient is φ = 818657280.

The previous prime is 1311142109. The next prime is 1311142121. The reversal of 1311142113 is 3112411131.

It is a happy number.

It is not a de Polignac number, because 1311142113 - 2² = 1311142109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311142193) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4632870 + ... + 4633152.

It is an arithmetic number, because the mean of its divisors is an integer number (32354700).

Almost surely, 2^1311142113 is an apocalyptic number.

It is an amenable number.

1311142113 is a deficient number, since it is larger than the sum of its proper divisors (759558687).

1311142113 is a wasteful number, since it uses less digits than its factorization.

1311142113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 473 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1311142113 is about 36209.6963947504. The cubic root of 1311142113 is about 1094.5020742334.

Adding to 1311142113 its reverse (3112411131), we get a palindrome (4423553244).

The spelling of 1311142113 in words is "one billion, three hundred eleven million, one hundred forty-two thousand, one hundred thirteen".