214831531 has 2 divisors, whose sum is σ = 214831532. Its totient is φ = 214831530.

The previous prime is 214831511. The next prime is 214831543. The reversal of 214831531 is 135138412.

It is a happy number.

214831531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 214831531 - 2²⁷ = 80613803 is a prime.

It is a super-2 number, since 2×214831531² = 92305173423607922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 214831531.

It is not a weakly prime, because it can be changed into another prime (214831511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107415765 + 107415766.

It is an arithmetic number, because the mean of its divisors is an integer number (107415766).

Almost surely, 2^214831531 is an apocalyptic number.

214831531 is a deficient number, since it is larger than the sum of its proper divisors (1).

214831531 is an equidigital number, since it uses as much as digits as its factorization.

214831531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

The square root of 214831531 is about 14657.1324275931. The cubic root of 214831531 is about 598.9161274722.

Adding to 214831531 its reverse (135138412), we get a palindrome (349969943).

The spelling of 214831531 in words is "two hundred fourteen million, eight hundred thirty-one thousand, five hundred thirty-one".