1310685125 has 16 divisors (see below), whose sum is σ = 1731957552. Its totient is φ = 986867200.

The previous prime is 1310685109. The next prime is 1310685139. The reversal of 1310685125 is 5215860131.

It can be written as a sum of positive squares in 8 ways, for example, as 441084004 + 869601121 = 21002^2 + 29489^2 .

It is not a de Polignac number, because 1310685125 - 2⁴ = 1310685109 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1310685091 and 1310685100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306272 + ... + 310521.

It is an arithmetic number, because the mean of its divisors is an integer number (108247347).

Almost surely, 2^1310685125 is an apocalyptic number.

It is an amenable number.

1310685125 is a deficient number, since it is larger than the sum of its proper divisors (421272427).

1310685125 is an equidigital number, since it uses as much as digits as its factorization.

1310685125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616825 (or 616815 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 1310685125 is about 36203.3855461060. The cubic root of 1310685125 is about 1094.3748995026.

The spelling of 1310685125 in words is "one billion, three hundred ten million, six hundred eighty-five thousand, one hundred twenty-five".