101952391 has 2 divisors, whose sum is σ = 101952392. Its totient is φ = 101952390.

The previous prime is 101952377. The next prime is 101952419. The reversal of 101952391 is 193259101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101952391 - 2²³ = 93563783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101952341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50976195 + 50976196.

It is an arithmetic number, because the mean of its divisors is an integer number (50976196).

Almost surely, 2^101952391 is an apocalyptic number.

101952391 is a deficient number, since it is larger than the sum of its proper divisors (1).

101952391 is an equidigital number, since it uses as much as digits as its factorization.

101952391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 101952391 is about 10097.1476665443. The cubic root of 101952391 is about 467.1601671112.

The spelling of 101952391 in words is "one hundred one million, nine hundred fifty-two thousand, three hundred ninety-one".