1307243320 has 32 divisors (see below), whose sum is σ = 3096104400. Its totient is φ = 495376128.

The previous prime is 1307243299. The next prime is 1307243321. The reversal of 1307243320 is 233427031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307243321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859269 + ... + 860788.

Almost surely, 2^1307243320 is an apocalyptic number.

1307243320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1307243320 is an abundant number, since it is smaller than the sum of its proper divisors (1788861080).

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

1307243320 is a wasteful number, since it uses less digits than its factorization.

1307243320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720087 (or 1720083 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 1307243320 is about 36155.8200017646. The cubic root of 1307243320 is about 1093.4161320235.

The spelling of 1307243320 in words is "one billion, three hundred seven million, two hundred forty-three thousand, three hundred twenty".