1302125313 has 4 divisors (see below), whose sum is σ = 1736167088. Its totient is φ = 868083540.

The previous prime is 1302125311. The next prime is 1302125323. The reversal of 1302125313 is 3135212031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1302125313 - 2¹ = 1302125311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1302125313.

It is not an unprimeable number, because it can be changed into a prime (1302125311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217020883 + ... + 217020888.

It is an arithmetic number, because the mean of its divisors is an integer number (434041772).

Almost surely, 2^1302125313 is an apocalyptic number.

It is an amenable number.

1302125313 is a deficient number, since it is larger than the sum of its proper divisors (434041775).

1302125313 is an equidigital number, since it uses as much as digits as its factorization.

1302125313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434041774.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1302125313 is about 36084.9735069876. The cubic root of 1302125313 is about 1091.9873160316.

Adding to 1302125313 its reverse (3135212031), we get a palindrome (4437337344).

The spelling of 1302125313 in words is "one billion, three hundred two million, one hundred twenty-five thousand, three hundred thirteen".