131101213 has 2 divisors, whose sum is σ = 131101214. Its totient is φ = 131101212.

The previous prime is 131101207. The next prime is 131101237. The reversal of 131101213 is 312101131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106131204 + 24970009 = 10302^2 + 4997^2 .

It is a cyclic number.

It is not a de Polignac number, because 131101213 - 2⁹ = 131100701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131101193 and 131101202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131101253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65550606 + 65550607.

It is an arithmetic number, because the mean of its divisors is an integer number (65550607).

Almost surely, 2^131101213 is an apocalyptic number.

It is an amenable number.

131101213 is a deficient number, since it is larger than the sum of its proper divisors (1).

131101213 is an equidigital number, since it uses as much as digits as its factorization.

131101213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 131101213 is about 11449.9437989887. The cubic root of 131101213 is about 508.0060720646.

Adding to 131101213 its reverse (312101131), we get a palindrome (443202344).

It can be divided in two parts, 1311012 and 13, that added together give a square (1311025 = 1145²).

The spelling of 131101213 in words is "one hundred thirty-one million, one hundred one thousand, two hundred thirteen".