1307731332 has 24 divisors (see below), whose sum is σ = 3184042176. Its totient is φ = 416957728.

The previous prime is 1307731331. The next prime is 1307731339. The reversal of 1307731332 is 2331377031.

It is a super-2 number, since 2×1307731332² = 3420322473388988448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1307731332.

It is not an unprimeable number, because it can be changed into a prime (1307731331) 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, 2368803 + ... + 2369354.

It is an arithmetic number, because the mean of its divisors is an integer number (132668424).

Almost surely, 2^1307731332 is an apocalyptic number.

1307731332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1307731332 is an abundant number, since it is smaller than the sum of its proper divisors (1876310844).

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

1307731332 is a wasteful number, since it uses less digits than its factorization.

1307731332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738187 (or 4738185 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 30.

The square root of 1307731332 is about 36162.5681057084. The cubic root of 1307731332 is about 1093.5521775474.

The spelling of 1307731332 in words is "one billion, three hundred seven million, seven hundred thirty-one thousand, three hundred thirty-two".