211230331434 has 24 divisors (see below), whose sum is σ = 458752826532. Its totient is φ = 70242863040.

The previous prime is 211230331357. The next prime is 211230331453. The reversal of 211230331434 is 434133032112.

It is a happy number.

211230331434 is a `hidden beast` number, since 2 + 1 + 12 + 303 + 314 + 34 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 156101639409 + 55128692025 = 395097^2 + 234795^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211230331398 and 211230331407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13929499 + ... + 13944654.

Almost surely, 2^211230331434 is an apocalyptic number.

211230331434 is an abundant number, since it is smaller than the sum of its proper divisors (247522495098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211230331434 is a wasteful number, since it uses less digits than its factorization.

211230331434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27874582 (or 27874579 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 211230331434 its reverse (434133032112), we get a palindrome (645363363546).

The spelling of 211230331434 in words is "two hundred eleven billion, two hundred thirty million, three hundred thirty-one thousand, four hundred thirty-four".