214431031 has 2 divisors, whose sum is σ = 214431032. Its totient is φ = 214431030.

The previous prime is 214431029. The next prime is 214431037. The reversal of 214431031 is 130134412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 214431031 - 2¹ = 214431029 is a prime.

It is a super-2 number, since 2×214431031² = 91961334111445922, which contains 22 as substring.

Together with 214431029, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214431037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107215515 + 107215516.

It is an arithmetic number, because the mean of its divisors is an integer number (107215516).

Almost surely, 2^214431031 is an apocalyptic number.

214431031 is a deficient number, since it is larger than the sum of its proper divisors (1).

214431031 is an equidigital number, since it uses as much as digits as its factorization.

214431031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 214431031 is about 14643.4637637411. The cubic root of 214431031 is about 598.5437191959.

Adding to 214431031 its reverse (130134412), we get a palindrome (344565443).

The spelling of 214431031 in words is "two hundred fourteen million, four hundred thirty-one thousand, thirty-one".