213240402402 has 16 divisors (see below), whose sum is σ = 427998533472. Its totient is φ = 70827179360.

The previous prime is 213240402383. The next prime is 213240402439. The reversal of 213240402402 is 204204042312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63236868 + ... + 63240239.

It is an arithmetic number, because the mean of its divisors is an integer number (26749908342).

Almost surely, 2^213240402402 is an apocalyptic number.

213240402402 is an abundant number, since it is smaller than the sum of its proper divisors (214758131070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213240402402 is a wasteful number, since it uses less digits than its factorization.

213240402402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126477393.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 213240402402 its reverse (204204042312), we get a palindrome (417444444714).

The spelling of 213240402402 in words is "two hundred thirteen billion, two hundred forty million, four hundred two thousand, four hundred two".