1312240532 has 12 divisors (see below), whose sum is σ = 2306450580. Its totient is φ = 653254656.

The previous prime is 1312240513. The next prime is 1312240549. The reversal of 1312240532 is 2350422131.

It can be written as a sum of positive squares in 2 ways, for example, as 958273936 + 353966596 = 30956^2 + 18814^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1312240498 and 1312240507.

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, 715373 + ... + 717204.

It is an arithmetic number, because the mean of its divisors is an integer number (192204215).

Almost surely, 2^1312240532 is an apocalyptic number.

It is an amenable number.

1312240532 is a deficient number, since it is larger than the sum of its proper divisors (994210048).

1312240532 is a wasteful number, since it uses less digits than its factorization.

1312240532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432810 (or 1432808 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1312240532 is about 36224.8606898633. The cubic root of 1312240532 is about 1094.8076313236.

Adding to 1312240532 its reverse (2350422131), we get a palindrome (3662662663).

The spelling of 1312240532 in words is "one billion, three hundred twelve million, two hundred forty thousand, five hundred thirty-two".