213444043340 has 48 divisors (see below), whose sum is σ = 494872277760. Its totient is φ = 76680876480.

The previous prime is 213444043327. The next prime is 213444043391. The reversal of 213444043340 is 43340444312.

It is a junction number, because it is equal to n+sod(n) for n = 213444043297 and 213444043306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5826320 + ... + 5862839.

It is an arithmetic number, because the mean of its divisors is an integer number (10309839120).

Almost surely, 2^213444043340 is an apocalyptic number.

213444043340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213444043340 is an abundant number, since it is smaller than the sum of its proper divisors (281428234420).

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

213444043340 is a wasteful number, since it uses less digits than its factorization.

213444043340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11689262 (or 11689260 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 213444043340 its reverse (43340444312), we get a palindrome (256784487652).

The spelling of 213444043340 in words is "two hundred thirteen billion, four hundred forty-four million, forty-three thousand, three hundred forty".