1311232112 has 40 divisors (see below), whose sum is σ = 2569415904. Its totient is φ = 648187904.

The previous prime is 1311232057. The next prime is 1311232121. The reversal of 1311232112 is 2112321131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071533 + ... + 1072755.

Almost surely, 2^1311232112 is an apocalyptic number.

It is an amenable number.

1311232112 is a deficient number, since it is larger than the sum of its proper divisors (1258183792).

1311232112 is a wasteful number, since it uses less digits than its factorization.

1311232112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937 (or 1931 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 1311232112 is about 36210.9391206580. The cubic root of 1311232112 is about 1094.5271164816.

Adding to 1311232112 its reverse (2112321131), we get a palindrome (3423553243).

It can be divided in two parts, 1 and 311232112, that added together give a palindrome (311232113).

The spelling of 1311232112 in words is "one billion, three hundred eleven million, two hundred thirty-two thousand, one hundred twelve".