1312023133 has 8 divisors (see below), whose sum is σ = 1357822080. Its totient is φ = 1266261360.

The previous prime is 1312023101. The next prime is 1312023143. The reversal of 1312023133 is 3313202131.

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

It is a cyclic number.

It is not a de Polignac number, because 1312023133 - 2⁵ = 1312023101 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 1312023133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312023143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75888 + ... + 91558.

It is an arithmetic number, because the mean of its divisors is an integer number (169727760).

Almost surely, 2^1312023133 is an apocalyptic number.

It is an amenable number.

1312023133 is a deficient number, since it is larger than the sum of its proper divisors (45798947).

1312023133 is a wasteful number, since it uses less digits than its factorization.

1312023133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18587.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1312023133 is about 36221.8598777037. The cubic root of 1312023133 is about 1094.7471690269.

Adding to 1312023133 its reverse (3313202131), we get a palindrome (4625225264).

The spelling of 1312023133 in words is "one billion, three hundred twelve million, twenty-three thousand, one hundred thirty-three".