213931884838 has 32 divisors (see below), whose sum is σ = 371076552000. Its totient is φ = 90607300224.

The previous prime is 213931884797. The next prime is 213931884839. The reversal of 213931884838 is 838488139312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213931884839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150648 + ... + 671236.

It is an arithmetic number, because the mean of its divisors is an integer number (11596142250).

Almost surely, 2^213931884838 is an apocalyptic number.

213931884838 is a deficient number, since it is larger than the sum of its proper divisors (157144667162).

213931884838 is a wasteful number, since it uses less digits than its factorization.

213931884838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520944.

The product of its digits is 7962624, while the sum is 58.

The spelling of 213931884838 in words is "two hundred thirteen billion, nine hundred thirty-one million, eight hundred eighty-four thousand, eight hundred thirty-eight".