101239213 has 2 divisors, whose sum is σ = 101239214. Its totient is φ = 101239212.

The previous prime is 101239189. The next prime is 101239217. The reversal of 101239213 is 312932101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98148649 + 3090564 = 9907^2 + 1758^2 .

It is a cyclic number.

It is not a de Polignac number, because 101239213 - 2¹³ = 101231021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101239217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50619606 + 50619607.

It is an arithmetic number, because the mean of its divisors is an integer number (50619607).

Almost surely, 2^101239213 is an apocalyptic number.

It is an amenable number.

101239213 is a deficient number, since it is larger than the sum of its proper divisors (1).

101239213 is an equidigital number, since it uses as much as digits as its factorization.

101239213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 101239213 is about 10061.7698741325. The cubic root of 101239213 is about 466.0683233462.

The spelling of 101239213 in words is "one hundred one million, two hundred thirty-nine thousand, two hundred thirteen".