1310978125 has 12 divisors (see below), whose sum is σ = 1638621684. Its totient is φ = 1048780000.

The previous prime is 1310978087. The next prime is 1310978143. The reversal of 1310978125 is 5218790131.

It can be written as a sum of positive squares in 6 ways, for example, as 1249056964 + 61921161 = 35342^2 + 7869^2 .

It is not a de Polignac number, because 1310978125 - 2¹¹ = 1310976077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206632 + ... + 212881.

It is an arithmetic number, because the mean of its divisors is an integer number (136551807).

Almost surely, 2^1310978125 is an apocalyptic number.

It is an amenable number.

1310978125 is a deficient number, since it is larger than the sum of its proper divisors (327643559).

1310978125 is an frugal number, since it uses more digits than its factorization.

1310978125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419538 (or 419518 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 1310978125 is about 36207.4319028566. The cubic root of 1310978125 is about 1094.4564415778.

The spelling of 1310978125 in words is "one billion, three hundred ten million, nine hundred seventy-eight thousand, one hundred twenty-five".