1310142605 has 4 divisors (see below), whose sum is σ = 1572171132. Its totient is φ = 1048114080.

The previous prime is 1310142551. The next prime is 1310142611. The reversal of 1310142605 is 5062410131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 366301321 + 943841284 = 19139^2 + 30722^2 .

It is not a de Polignac number, because 1310142605 - 2²⁶ = 1243033741 is a prime.

It is a super-3 number, since 3×1310142605³ (a number of 28 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 131014256 + ... + 131014265.

It is an arithmetic number, because the mean of its divisors is an integer number (393042783).

Almost surely, 2^1310142605 is an apocalyptic number.

It is an amenable number.

1310142605 is a deficient number, since it is larger than the sum of its proper divisors (262028527).

1310142605 is an equidigital number, since it uses as much as digits as its factorization.

1310142605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262028526.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1310142605 is about 36195.8921011763. The cubic root of 1310142605 is about 1094.2238837741.

Adding to 1310142605 its reverse (5062410131), we get a palindrome (6372552736).

The spelling of 1310142605 in words is "one billion, three hundred ten million, one hundred forty-two thousand, six hundred five".