101939623 has 2 divisors, whose sum is σ = 101939624. Its totient is φ = 101939622.

The previous prime is 101939587. The next prime is 101939641. The reversal of 101939623 is 326939101.

It is a strong prime.

It is an emirp because it is prime and its reverse (326939101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101939623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101939923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50969811 + 50969812.

It is an arithmetic number, because the mean of its divisors is an integer number (50969812).

Almost surely, 2^101939623 is an apocalyptic number.

101939623 is a deficient number, since it is larger than the sum of its proper divisors (1).

101939623 is an equidigital number, since it uses as much as digits as its factorization.

101939623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 101939623 is about 10096.5153889845. The cubic root of 101939623 is about 467.1406647076.

The spelling of 101939623 in words is "one hundred one million, nine hundred thirty-nine thousand, six hundred twenty-three".