135214971 has 4 divisors (see below), whose sum is σ = 180286632. Its totient is φ = 90143312.

The previous prime is 135214969. The next prime is 135214973. The reversal of 135214971 is 179412531.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (135214969) and next prime (135214973).

It is a cyclic number.

It is not a de Polignac number, because 135214971 - 2¹ = 135214969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135214973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22535826 + ... + 22535831.

It is an arithmetic number, because the mean of its divisors is an integer number (45071658).

Almost surely, 2^135214971 is an apocalyptic number.

135214971 is a deficient number, since it is larger than the sum of its proper divisors (45071661).

135214971 is an equidigital number, since it uses as much as digits as its factorization.

135214971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45071660.

The product of its digits is 7560, while the sum is 33.

The square root of 135214971 is about 11628.1972377493. The cubic root of 135214971 is about 513.2649323696.

Adding to 135214971 its product of digits (7560), we get a palindrome (135222531).

The spelling of 135214971 in words is "one hundred thirty-five million, two hundred fourteen thousand, nine hundred seventy-one".