1312505133 has 8 divisors (see below), whose sum is σ = 1750539168. Its totient is φ = 874737264.

The previous prime is 1312505119. The next prime is 1312505153. The reversal of 1312505133 is 3315052131.

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

It is not a de Polignac number, because 1312505133 - 2⁵ = 1312505101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312505153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54735 + ... + 74972.

It is an arithmetic number, because the mean of its divisors is an integer number (218817396).

Almost surely, 2^1312505133 is an apocalyptic number.

It is an amenable number.

1312505133 is a deficient number, since it is larger than the sum of its proper divisors (438034035).

1312505133 is a wasteful number, since it uses less digits than its factorization.

1312505133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133083.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 1312505133 is about 36228.5127075347. The cubic root of 1312505133 is about 1094.8812122763.

Adding to 1312505133 its reverse (3315052131), we get a palindrome (4627557264).

The spelling of 1312505133 in words is "one billion, three hundred twelve million, five hundred five thousand, one hundred thirty-three".