135900971 has 2 divisors, whose sum is σ = 135900972. Its totient is φ = 135900970.

The previous prime is 135900959. The next prime is 135901001. The reversal of 135900971 is 179009531.

135900971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135900971 - 2²⁶ = 68792107 is a prime.

It is equal to p_7693451 and since 135900971 and 7693451 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (135900911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67950485 + 67950486.

It is an arithmetic number, because the mean of its divisors is an integer number (67950486).

Almost surely, 2^135900971 is an apocalyptic number.

135900971 is a deficient number, since it is larger than the sum of its proper divisors (1).

135900971 is an equidigital number, since it uses as much as digits as its factorization.

135900971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 135900971 is about 11657.6571831565. The cubic root of 135900971 is about 514.1314684879.

The spelling of 135900971 in words is "one hundred thirty-five million, nine hundred thousand, nine hundred seventy-one".