214163931 has 4 divisors (see below), whose sum is σ = 285551912. Its totient is φ = 142775952.

The previous prime is 214163899. The next prime is 214163933. The reversal of 214163931 is 139361412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 214163931 - 2⁵ = 214163899 is a prime.

It is a super-2 number, since 2×214163931² = 91732378682745522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214163933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35693986 + ... + 35693991.

It is an arithmetic number, because the mean of its divisors is an integer number (71387978).

Almost surely, 2^214163931 is an apocalyptic number.

214163931 is a deficient number, since it is larger than the sum of its proper divisors (71387981).

214163931 is an equidigital number, since it uses as much as digits as its factorization.

214163931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71387980.

The product of its digits is 3888, while the sum is 30.

The square root of 214163931 is about 14634.3408119396. The cubic root of 214163931 is about 598.2950962047.

The spelling of 214163931 in words is "two hundred fourteen million, one hundred sixty-three thousand, nine hundred thirty-one".