313612133 has 2 divisors, whose sum is σ = 313612134. Its totient is φ = 313612132.

The previous prime is 313612129. The next prime is 313612147. The reversal of 313612133 is 331216313.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214271044 + 99341089 = 14638^2 + 9967^2 .

It is an emirp because it is prime and its reverse (331216313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313612133 - 2² = 313612129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313612099 and 313612108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313612433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156806066 + 156806067.

It is an arithmetic number, because the mean of its divisors is an integer number (156806067).

Almost surely, 2^313612133 is an apocalyptic number.

It is an amenable number.

313612133 is a deficient number, since it is larger than the sum of its proper divisors (1).

313612133 is an equidigital number, since it uses as much as digits as its factorization.

313612133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 23.

The square root of 313612133 is about 17709.0974642978. The cubic root of 313612133 is about 679.4084626423.

Adding to 313612133 its reverse (331216313), we get a palindrome (644828446).

The spelling of 313612133 in words is "three hundred thirteen million, six hundred twelve thousand, one hundred thirty-three".