213444043342 has 64 divisors (see below), whose sum is σ = 344204640000. Its totient is φ = 98976252672.

The previous prime is 213444043327. The next prime is 213444043391. The reversal of 213444043342 is 243340444312.

It is a junction number, because it is equal to n+sod(n) for n = 213444043298 and 213444043307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235329253 + ... + 235330159.

It is an arithmetic number, because the mean of its divisors is an integer number (5378197500).

Almost surely, 2^213444043342 is an apocalyptic number.

213444043342 is a deficient number, since it is larger than the sum of its proper divisors (130760596658).

213444043342 is a wasteful number, since it uses less digits than its factorization.

213444043342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 213444043342 its reverse (243340444312), we get a palindrome (456784487654).

The spelling of 213444043342 in words is "two hundred thirteen billion, four hundred forty-four million, forty-three thousand, three hundred forty-two".