1312152145 has 8 divisors (see below), whose sum is σ = 1574830440. Its totient is φ = 1049556480.

The previous prime is 1312152133. The next prime is 1312152167. The reversal of 1312152145 is 5412512131.

It can be written as a sum of positive squares in 4 ways, for example, as 31371201 + 1280780944 = 5601^2 + 35788^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1312152145 - 2⁵ = 1312152113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22471 + ... + 55939.

It is an arithmetic number, because the mean of its divisors is an integer number (196853805).

Almost surely, 2^1312152145 is an apocalyptic number.

It is an amenable number.

1312152145 is a deficient number, since it is larger than the sum of its proper divisors (262678295).

1312152145 is an equidigital number, since it uses as much as digits as its factorization.

1312152145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41315.

The product of its digits is 1200, while the sum is 25.

The square root of 1312152145 is about 36223.6406922330. The cubic root of 1312152145 is about 1094.7830502268.

Adding to 1312152145 its reverse (5412512131), we get a palindrome (6724664276).

The spelling of 1312152145 in words is "one billion, three hundred twelve million, one hundred fifty-two thousand, one hundred forty-five".