213541971 has 8 divisors (see below), whose sum is σ = 284947344. Its totient is φ = 142248960.

The previous prime is 213541963. The next prime is 213541973. The reversal of 213541971 is 179145312.

213541971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213541971 - 2³ = 213541963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213541973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23550 + ... + 31331.

It is an arithmetic number, because the mean of its divisors is an integer number (35618418).

Almost surely, 2^213541971 is an apocalyptic number.

213541971 is a deficient number, since it is larger than the sum of its proper divisors (71405373).

213541971 is a wasteful number, since it uses less digits than its factorization.

213541971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56181.

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

The square root of 213541971 is about 14613.0753436777. The cubic root of 213541971 is about 597.7153589559.

The spelling of 213541971 in words is "two hundred thirteen million, five hundred forty-one thousand, nine hundred seventy-one".