212034431 has 16 divisors (see below), whose sum is σ = 246941184. Its totient is φ = 178304544.

The previous prime is 212034409. The next prime is 212034463. The reversal of 212034431 is 134430212.

It is a cyclic number.

It is not a de Polignac number, because 212034431 - 2¹⁸ = 211772287 is a prime.

It is a super-2 number, since 2×212034431² = 89917199858987522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212034481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136646 + ... + 138188.

It is an arithmetic number, because the mean of its divisors is an integer number (15433824).

Almost surely, 2^212034431 is an apocalyptic number.

212034431 is a deficient number, since it is larger than the sum of its proper divisors (34906753).

212034431 is a wasteful number, since it uses less digits than its factorization.

212034431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 212034431 is about 14561.4020959522. The cubic root of 212034431 is about 596.3054743452.

Adding to 212034431 its reverse (134430212), we get a palindrome (346464643).

The spelling of 212034431 in words is "two hundred twelve million, thirty-four thousand, four hundred thirty-one".