212451431 has 8 divisors (see below), whose sum is σ = 225961344. Its totient is φ = 199054080.

The previous prime is 212451427. The next prime is 212451451. The reversal of 212451431 is 134154212.

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 212451431 - 2² = 212451427 is a prime.

It is a super-2 number, since 2×212451431² = 90271221067895522, 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 = 212451397 and 212451406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212451451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24230 + ... + 31811.

It is an arithmetic number, because the mean of its divisors is an integer number (28245168).

Almost surely, 2^212451431 is an apocalyptic number.

212451431 is a deficient number, since it is larger than the sum of its proper divisors (13509913).

212451431 is a wasteful number, since it uses less digits than its factorization.

212451431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56281.

The product of its digits is 960, while the sum is 23.

The square root of 212451431 is about 14575.7137389563. The cubic root of 212451431 is about 596.6961287464.

The spelling of 212451431 in words is "two hundred twelve million, four hundred fifty-one thousand, four hundred thirty-one".