213231004102 has 4 divisors (see below), whose sum is σ = 319846506156. Its totient is φ = 106615502050.

The previous prime is 213231004099. The next prime is 213231004117. The reversal of 213231004102 is 201400132312.

It is a happy number.

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

It is a super-2 number, since 2×213231004102² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213231004102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53307751024 + ... + 53307751027.

It is an arithmetic number, because the mean of its divisors is an integer number (79961626539).

Almost surely, 2^213231004102 is an apocalyptic number.

213231004102 is a deficient number, since it is larger than the sum of its proper divisors (106615502054).

213231004102 is a wasteful number, since it uses less digits than its factorization.

213231004102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106615502053.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 213231004102 its reverse (201400132312), we get a palindrome (414631136414).

The spelling of 213231004102 in words is "two hundred thirteen billion, two hundred thirty-one million, four thousand, one hundred two".