1310930920 has 32 divisors (see below), whose sum is σ = 3176487720. Its totient is φ = 484035840.

The previous prime is 1310930903. The next prime is 1310930941. The reversal of 1310930920 is 290390131.

It can be written as a sum of positive squares in 4 ways, for example, as 1186251364 + 124679556 = 34442^2 + 11166^2 .

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1259991 + ... + 1261030.

Almost surely, 2^1310930920 is an apocalyptic number.

1310930920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310930920 is an abundant number, since it is smaller than the sum of its proper divisors (1865556800).

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

1310930920 is a wasteful number, since it uses less digits than its factorization.

1310930920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521045 (or 2521041 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 1310930920 is about 36206.7800280555. The cubic root of 1310930920 is about 1094.4433052192.

The spelling of 1310930920 in words is "one billion, three hundred ten million, nine hundred thirty thousand, nine hundred twenty".