213400052 has 24 divisors (see below), whose sum is σ = 377190240. Its totient is φ = 105636960.

The previous prime is 213400043. The next prime is 213400081. The reversal of 213400052 is 250004312.

It is a self number, because there is not a number n which added to its sum of digits gives 213400052.

It is a congruent number.

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, 262727 + ... + 263537.

It is an arithmetic number, because the mean of its divisors is an integer number (15716260).

Almost surely, 2^213400052 is an apocalyptic number.

It is an amenable number.

213400052 is a deficient number, since it is larger than the sum of its proper divisors (163790188).

213400052 is a wasteful number, since it uses less digits than its factorization.

213400052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391 (or 1389 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 213400052 is about 14608.2186456802. The cubic root of 213400052 is about 597.5829166629.

Adding to 213400052 its reverse (250004312), we get a palindrome (463404364).

The spelling of 213400052 in words is "two hundred thirteen million, four hundred thousand, fifty-two".