212343432 has 32 divisors (see below), whose sum is σ = 606696000. Its totient is φ = 60669504.

The previous prime is 212343431. The next prime is 212343433. The reversal of 212343432 is 234343212.

212343432 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (212343431) and next prime (212343433).

It is a super-2 number, since 2×212343432² = 90179466227077248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (212343431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631807 + ... + 632142.

It is an arithmetic number, because the mean of its divisors is an integer number (18959250).

Almost surely, 2^212343432 is an apocalyptic number.

It is an amenable number.

212343432 is an abundant number, since it is smaller than the sum of its proper divisors (394352568).

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

212343432 is a wasteful number, since it uses less digits than its factorization.

212343432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263965 (or 1263961 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

The square root of 212343432 is about 14572.0085094677. The cubic root of 212343432 is about 596.5950020909.

Adding to 212343432 its reverse (234343212), we get a palindrome (446686644).

The spelling of 212343432 in words is "two hundred twelve million, three hundred forty-three thousand, four hundred thirty-two".