214401431 has 2 divisors, whose sum is σ = 214401432. Its totient is φ = 214401430.

The previous prime is 214401391. The next prime is 214401461. The reversal of 214401431 is 134104412.

214401431 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 a de Polignac number, because none of the positive numbers 2^k-214401431 is a prime.

It is a super-2 number, since 2×214401431² = 91935947229695522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214401461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107200715 + 107200716.

It is an arithmetic number, because the mean of its divisors is an integer number (107200716).

Almost surely, 2^214401431 is an apocalyptic number.

214401431 is a deficient number, since it is larger than the sum of its proper divisors (1).

214401431 is an equidigital number, since it uses as much as digits as its factorization.

214401431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 214401431 is about 14642.4530390232. The cubic root of 214401431 is about 598.5161769923.

Adding to 214401431 its reverse (134104412), we get a palindrome (348505843).

The spelling of 214401431 in words is "two hundred fourteen million, four hundred one thousand, four hundred thirty-one".