214945431 has 8 divisors (see below), whose sum is σ = 286880880. Its totient is φ = 143153472.

The previous prime is 214945397. The next prime is 214945439. The reversal of 214945431 is 134549412.

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

It is not a de Polignac number, because 214945431 - 2²⁵ = 181390999 is a prime.

It is a super-2 number, since 2×214945431² = 92403076615551522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 214945392 and 214945401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214945439) 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, 32326 + ... + 38403.

It is an arithmetic number, because the mean of its divisors is an integer number (35860110).

Almost surely, 2^214945431 is an apocalyptic number.

214945431 is a deficient number, since it is larger than the sum of its proper divisors (71935449).

214945431 is a wasteful number, since it uses less digits than its factorization.

214945431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71745.

The product of its digits is 17280, while the sum is 33.

The square root of 214945431 is about 14661.0173930734. The cubic root of 214945431 is about 599.0219537979.

The spelling of 214945431 in words is "two hundred fourteen million, nine hundred forty-five thousand, four hundred thirty-one".