213513051442 has 4 divisors (see below), whose sum is σ = 320269577166. Its totient is φ = 106756525720.

The previous prime is 213513051439. The next prime is 213513051469. The reversal of 213513051442 is 244150315312.

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

It can be written as a sum of positive squares in only one way, i.e., 213202904121 + 310147321 = 461739^2 + 17611^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53378262859 + ... + 53378262862.

Almost surely, 2^213513051442 is an apocalyptic number.

213513051442 is a deficient number, since it is larger than the sum of its proper divisors (106756525724).

213513051442 is a wasteful number, since it uses less digits than its factorization.

213513051442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106756525723.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 213513051442 its reverse (244150315312), we get a palindrome (457663366754).

The spelling of 213513051442 in words is "two hundred thirteen billion, five hundred thirteen million, fifty-one thousand, four hundred forty-two".