1315251141 has 4 divisors (see below), whose sum is σ = 1753668192. Its totient is φ = 876834092.

The previous prime is 1315251137. The next prime is 1315251143. The reversal of 1315251141 is 1411525131.

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 a cyclic number.

It is not a de Polignac number, because 1315251141 - 2² = 1315251137 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315251143) 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, 219208521 + ... + 219208526.

It is an arithmetic number, because the mean of its divisors is an integer number (438417048).

Almost surely, 2^1315251141 is an apocalyptic number.

It is an amenable number.

1315251141 is a deficient number, since it is larger than the sum of its proper divisors (438417051).

1315251141 is an equidigital number, since it uses as much as digits as its factorization.

1315251141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438417050.

The product of its digits is 600, while the sum is 24.

The square root of 1315251141 is about 36266.3913423985. The cubic root of 1315251141 is about 1095.6442463064.

Adding to 1315251141 its reverse (1411525131), we get a palindrome (2726776272).

The spelling of 1315251141 in words is "one billion, three hundred fifteen million, two hundred fifty-one thousand, one hundred forty-one".