1310238720 has 384 divisors, whose sum is σ = 5330707200. Its totient is φ = 299040768.

The previous prime is 1310238719. The next prime is 1310238737. The reversal of 1310238720 is 278320131.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1935022 + ... + 1935698.

It is an arithmetic number, because the mean of its divisors is an integer number (13882050).

Almost surely, 2^1310238720 is an apocalyptic number.

1310238720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1310238720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2665353600).

1310238720 is an abundant number, since it is smaller than the sum of its proper divisors (4020468480).

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

1310238720 is an equidigital number, since it uses as much as digits as its factorization.

1310238720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1310238720 is about 36197.2197827402. The cubic root of 1310238720 is about 1094.2506413592.

Adding to 1310238720 its reverse (278320131), we get a palindrome (1588558851).

The spelling of 1310238720 in words is "one billion, three hundred ten million, two hundred thirty-eight thousand, seven hundred twenty".