213512146 has 32 divisors (see below), whose sum is σ = 344881152. Its totient is φ = 98784000.

The previous prime is 213512137. The next prime is 213512149. The reversal of 213512146 is 641215312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 213512146.

It is not an unprimeable number, because it can be changed into a prime (213512149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 850521 + ... + 850771.

It is an arithmetic number, because the mean of its divisors is an integer number (10777536).

Almost surely, 2^213512146 is an apocalyptic number.

213512146 is a deficient number, since it is larger than the sum of its proper divisors (131369006).

213512146 is a wasteful number, since it uses less digits than its factorization.

213512146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594.

The product of its digits is 1440, while the sum is 25.

The square root of 213512146 is about 14612.0548178550. The cubic root of 213512146 is about 597.6875304054.

Adding to 213512146 its reverse (641215312), we get a palindrome (854727458).

The spelling of 213512146 in words is "two hundred thirteen million, five hundred twelve thousand, one hundred forty-six".