211014431 has 2 divisors, whose sum is σ = 211014432. Its totient is φ = 211014430.

The previous prime is 211014409. The next prime is 211014449. The reversal of 211014431 is 134410112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211014431 is a prime.

It is a super-2 number, since 2×211014431² = 89054180180507522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211014481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105507215 + 105507216.

It is an arithmetic number, because the mean of its divisors is an integer number (105507216).

Almost surely, 2^211014431 is an apocalyptic number.

211014431 is a deficient number, since it is larger than the sum of its proper divisors (1).

211014431 is an equidigital number, since it uses as much as digits as its factorization.

211014431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 211014431 is about 14526.3357733463. The cubic root of 211014431 is about 595.3477533071.

Adding to 211014431 its reverse (134410112), we get a palindrome (345424543).

The spelling of 211014431 in words is "two hundred eleven million, fourteen thousand, four hundred thirty-one".