1311909232 has 20 divisors (see below), whose sum is σ = 2549513656. Its totient is φ = 653970240.

The previous prime is 1311909211. The next prime is 1311909239. The reversal of 1311909232 is 2329091131.

It is a super-2 number, since 2×1311909232² = 3442211666013659648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311909194 and 1311909203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311909239) by changing a digit.

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, 118563 + ... + 129154.

Almost surely, 2^1311909232 is an apocalyptic number.

It is an amenable number.

1311909232 is a deficient number, since it is larger than the sum of its proper divisors (1237604424).

1311909232 is a wasteful number, since it uses less digits than its factorization.

1311909232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248056 (or 248050 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 1311909232 is about 36220.2875747833. The cubic root of 1311909232 is about 1094.7154885881.

The spelling of 1311909232 in words is "one billion, three hundred eleven million, nine hundred nine thousand, two hundred thirty-two".