213131214 has 24 divisors (see below), whose sum is σ = 462250152. Its totient is φ = 70972080.

The previous prime is 213131209. The next prime is 213131249. The reversal of 213131214 is 412131312.

It is a super-2 number, since 2×213131214² = 90849828762227592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14212 + ... + 25064.

It is an arithmetic number, because the mean of its divisors is an integer number (19260423).

Almost surely, 2^213131214 is an apocalyptic number.

213131214 is an abundant number, since it is smaller than the sum of its proper divisors (249118938).

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

213131214 is a wasteful number, since it uses less digits than its factorization.

213131214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11952 (or 11949 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 213131214 is about 14599.0141447976. The cubic root of 213131214 is about 597.3318693856.

Adding to 213131214 its reverse (412131312), we get a palindrome (625262526).

The spelling of 213131214 in words is "two hundred thirteen million, one hundred thirty-one thousand, two hundred fourteen".