1311123032 has 8 divisors (see below), whose sum is σ = 2458355700. Its totient is φ = 655561512.

The previous prime is 1311123007. The next prime is 1311123041. The reversal of 1311123032 is 2303211131.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1311123032.

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 as a sum of consecutive naturals, namely, 81945182 + ... + 81945197.

Almost surely, 2^1311123032 is an apocalyptic number.

It is an amenable number.

1311123032 is a deficient number, since it is larger than the sum of its proper divisors (1147232668).

1311123032 is a wasteful number, since it uses less digits than its factorization.

1311123032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163890385 (or 163890381 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1311123032 is about 36209.4329146426. The cubic root of 1311123032 is about 1094.4967647923.

Adding to 1311123032 its reverse (2303211131), we get a palindrome (3614334163).

The spelling of 1311123032 in words is "one billion, three hundred eleven million, one hundred twenty-three thousand, thirty-two".