101943913 has 2 divisors, whose sum is σ = 101943914. Its totient is φ = 101943912.

The previous prime is 101943869. The next prime is 101943937. The reversal of 101943913 is 319349101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92871769 + 9072144 = 9637^2 + 3012^2 .

It is a cyclic number.

It is not a de Polignac number, because 101943913 - 2²⁵ = 68389481 is a prime.

It is a super-2 number, since 2×101943913² = 20785122795503138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101943953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50971956 + 50971957.

It is an arithmetic number, because the mean of its divisors is an integer number (50971957).

Almost surely, 2^101943913 is an apocalyptic number.

It is an amenable number.

101943913 is a deficient number, since it is larger than the sum of its proper divisors (1).

101943913 is an equidigital number, since it uses as much as digits as its factorization.

101943913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 101943913 is about 10096.7278362844. The cubic root of 101943913 is about 467.1472176235.

The spelling of 101943913 in words is "one hundred one million, nine hundred forty-three thousand, nine hundred thirteen".