1310599920 has 80 divisors (see below), whose sum is σ = 4643274240. Its totient is φ = 299565312.

The previous prime is 1310599897. The next prime is 1310599943. The reversal of 1310599920 is 299950131.

It is an interprime number because it is at equal distance from previous prime (1310599897) and next prime (1310599943).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388380 + ... + 391739.

It is an arithmetic number, because the mean of its divisors is an integer number (58040928).

Almost surely, 2^1310599920 is an apocalyptic number.

1310599920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310599920 is an abundant number, since it is smaller than the sum of its proper divisors (3332674320).

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

1310599920 is a wasteful number, since it uses less digits than its factorization.

1310599920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780142 (or 780136 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 39.

The square root of 1310599920 is about 36202.2087723940. The cubic root of 1310599920 is about 1094.3511846194.

The spelling of 1310599920 in words is "one billion, three hundred ten million, five hundred ninety-nine thousand, nine hundred twenty".