214042531 has 4 divisors (see below), whose sum is σ = 223348752. Its totient is φ = 204736312.

The previous prime is 214042513. The next prime is 214042547. The reversal of 214042531 is 135240412.

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

It is a cyclic number.

It is not a de Polignac number, because 214042531 - 2⁷ = 214042403 is a prime.

It is a super-2 number, since 2×214042531² = 91628410153771922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214042511) 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, 4653076 + ... + 4653121.

It is an arithmetic number, because the mean of its divisors is an integer number (55837188).

Almost surely, 2^214042531 is an apocalyptic number.

214042531 is a deficient number, since it is larger than the sum of its proper divisors (9306221).

214042531 is an equidigital number, since it uses as much as digits as its factorization.

214042531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9306220.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 214042531 is about 14630.1924457609. The cubic root of 214042531 is about 598.1820258839.

Adding to 214042531 its reverse (135240412), we get a palindrome (349282943).

The spelling of 214042531 in words is "two hundred fourteen million, forty-two thousand, five hundred thirty-one".