1311230032 has 20 divisors (see below), whose sum is σ = 2903438176. Its totient is φ = 561955680.

The previous prime is 1311230029. The next prime is 1311230047. The reversal of 1311230032 is 2300321131.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1311229988 and 1311230015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5853594 + ... + 5853817.

Almost surely, 2^1311230032 is an apocalyptic number.

It is an amenable number.

1311230032 is an abundant number, since it is smaller than the sum of its proper divisors (1592208144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311230032 is a wasteful number, since it uses less digits than its factorization.

1311230032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11707426 (or 11707420 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1311230032 is about 36210.9104000438. The cubic root of 1311230032 is about 1094.5265377339.

Adding to 1311230032 its reverse (2300321131), we get a palindrome (3611551163).

The spelling of 1311230032 in words is "one billion, three hundred eleven million, two hundred thirty thousand, thirty-two".