212433431 has 8 divisors (see below), whose sum is σ = 246107424. Its totient is φ = 179591040.

The previous prime is 212433427. The next prime is 212433443. The reversal of 212433431 is 134334212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212433431 - 2² = 212433427 is a prime.

It is a super-2 number, since 2×212433431² = 90255925212863522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212433397 and 212433406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212433031) 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, 207350 + ... + 208371.

It is an arithmetic number, because the mean of its divisors is an integer number (30763428).

Almost surely, 2^212433431 is an apocalyptic number.

212433431 is a deficient number, since it is larger than the sum of its proper divisors (33673993).

212433431 is an equidigital number, since it uses as much as digits as its factorization.

212433431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415801.

The product of its digits is 1728, while the sum is 23.

The square root of 212433431 is about 14575.0962604025. The cubic root of 212433431 is about 596.6792765282.

Adding to 212433431 its reverse (134334212), we get a palindrome (346767643).

The spelling of 212433431 in words is "two hundred twelve million, four hundred thirty-three thousand, four hundred thirty-one".