1313210133 has 6 divisors (see below), whose sum is σ = 1896859094. Its totient is φ = 875473416.

The previous prime is 1313210111. The next prime is 1313210167. The reversal of 1313210133 is 3310123131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 880486929 + 432723204 = 29673^2 + 20802^2 .

It is not a de Polignac number, because 1313210133 - 2¹⁸ = 1312947989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313210233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72956110 + ... + 72956127.

Almost surely, 2^1313210133 is an apocalyptic number.

It is an amenable number.

1313210133 is a deficient number, since it is larger than the sum of its proper divisors (583648961).

1313210133 is a wasteful number, since it uses less digits than its factorization.

1313210133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145912243 (or 145912240 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1313210133 is about 36238.2413066639. The cubic root of 1313210133 is about 1095.0772122948.

Adding to 1313210133 its reverse (3310123131), we get a palindrome (4623333264).

The spelling of 1313210133 in words is "one billion, three hundred thirteen million, two hundred ten thousand, one hundred thirty-three".