213527681903 has 4 divisors (see below), whose sum is σ = 213661389000. Its totient is φ = 213393974808.

The previous prime is 213527681833. The next prime is 213527681953. The reversal of 213527681903 is 309186725312.

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

It is a cyclic number.

It is not a de Polignac number, because 213527681903 - 2²² = 213523487599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213527681953) 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, 66851153 + ... + 66854346.

It is an arithmetic number, because the mean of its divisors is an integer number (53415347250).

Almost surely, 2^213527681903 is an apocalyptic number.

213527681903 is a deficient number, since it is larger than the sum of its proper divisors (133707097).

213527681903 is a wasteful number, since it uses less digits than its factorization.

213527681903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133707096.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 213527681903 in words is "two hundred thirteen billion, five hundred twenty-seven million, six hundred eighty-one thousand, nine hundred three".