313131101 has 4 divisors (see below), whose sum is σ = 313175100. Its totient is φ = 313087104.

The previous prime is 313131089. The next prime is 313131107. The reversal of 313131101 is 101131313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101131313 = 43 ⋅2351891.

It can be written as a sum of positive squares in 2 ways, for example, as 170328601 + 142802500 = 13051^2 + 11950^2 .

It is a cyclic number.

It is not a de Polignac number, because 313131101 - 2¹⁴ = 313114717 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 (313131107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8606 + ... + 26463.

It is an arithmetic number, because the mean of its divisors is an integer number (78293775).

Almost surely, 2^313131101 is an apocalyptic number.

It is an amenable number.

313131101 is a deficient number, since it is larger than the sum of its proper divisors (43999).

313131101 is an equidigital number, since it uses as much as digits as its factorization.

313131101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43998.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 313131101 is about 17695.5107583816. The cubic root of 313131101 is about 679.0609160870.

Adding to 313131101 its reverse (101131313), we get a palindrome (414262414).

The spelling of 313131101 in words is "three hundred thirteen million, one hundred thirty-one thousand, one hundred one".