1308861320 has 32 divisors (see below), whose sum is σ = 3171472920. Its totient is φ = 483271680.

The previous prime is 1308861319. The next prime is 1308861329. The reversal of 1308861320 is 231688031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 903483364 + 405377956 = 30058^2 + 20134^2 .

It is not an unprimeable number, because it can be changed into a prime (1308861329) 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, 1258001 + ... + 1259040.

Almost surely, 2^1308861320 is an apocalyptic number.

1308861320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1308861320 is an abundant number, since it is smaller than the sum of its proper divisors (1862611600).

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

1308861320 is a wasteful number, since it uses less digits than its factorization.

1308861320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517065 (or 2517061 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1308861320 is about 36178.1884565825. The cubic root of 1308861320 is about 1093.8670600370.

The spelling of 1308861320 in words is "one billion, three hundred eight million, eight hundred sixty-one thousand, three hundred twenty".