1310404520 has 32 divisors (see below), whose sum is σ = 2949441120. Its totient is φ = 523978560.

The previous prime is 1310404519. The next prime is 1310404541. The reversal of 1310404520 is 254040131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1310404492 and 1310404501.

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, 218279 + ... + 224201.

It is an arithmetic number, because the mean of its divisors is an integer number (92170035).

Almost surely, 2^1310404520 is an apocalyptic number.

1310404520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310404520 is an abundant number, since it is smaller than the sum of its proper divisors (1639036600).

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

1310404520 is a wasteful number, since it uses less digits than its factorization.

1310404520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11465 (or 11461 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1310404520 is about 36199.5099414343. The cubic root of 1310404520 is about 1094.2967955705.

Adding to 1310404520 its reverse (254040131), we get a palindrome (1564444651).

The spelling of 1310404520 in words is "one billion, three hundred ten million, four hundred four thousand, five hundred twenty".