214420645431 has 24 divisors (see below), whose sum is σ = 327957714864. Its totient is φ = 134530133760.

The previous prime is 214420645427. The next prime is 214420645463. The reversal of 214420645431 is 134546024412.

214420645431 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 2 + 0 + 645 + 4 + 3 + 1 = 666.

It is not a de Polignac number, because 214420645431 - 2² = 214420645427 is a prime.

It is a super-2 number, since 2×214420645431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214420645331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3265716 + ... + 3330726.

It is an arithmetic number, because the mean of its divisors is an integer number (13664904786).

Almost surely, 2^214420645431 is an apocalyptic number.

214420645431 is a deficient number, since it is larger than the sum of its proper divisors (113537069433).

214420645431 is a wasteful number, since it uses less digits than its factorization.

214420645431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86591 (or 86588 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 214420645431 its reverse (134546024412), we get a palindrome (348966669843).

The spelling of 214420645431 in words is "two hundred fourteen billion, four hundred twenty million, six hundred forty-five thousand, four hundred thirty-one".