1311241532 has 12 divisors (see below), whose sum is σ = 2343495840. Its totient is φ = 641671296.

The previous prime is 1311241507. The next prime is 1311241559. The reversal of 1311241532 is 2351421131.

It is a junction number, because it is equal to n+sod(n) for n = 1311241498 and 1311241507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3487157 + ... + 3487532.

It is an arithmetic number, because the mean of its divisors is an integer number (195291320).

Almost surely, 2^1311241532 is an apocalyptic number.

It is an amenable number.

1311241532 is a deficient number, since it is larger than the sum of its proper divisors (1032254308).

1311241532 is a wasteful number, since it uses less digits than its factorization.

1311241532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6974740 (or 6974738 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 1311241532 is about 36211.0691916160. The cubic root of 1311241532 is about 1094.5297375331.

Adding to 1311241532 its reverse (2351421131), we get a palindrome (3662662663).

The spelling of 1311241532 in words is "one billion, three hundred eleven million, two hundred forty-one thousand, five hundred thirty-two".