211431432308 has 6 divisors (see below), whose sum is σ = 370005006546. Its totient is φ = 105715716152.

The previous prime is 211431432301. The next prime is 211431432353. The reversal of 211431432308 is 803234134112.

It can be written as a sum of positive squares in only one way, i.e., 156418668004 + 55012764304 = 395498^2 + 234548^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211431432301) by changing a digit.

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 as a sum of consecutive naturals, namely, 26428929035 + ... + 26428929042.

It is an arithmetic number, because the mean of its divisors is an integer number (61667501091).

Almost surely, 2^211431432308 is an apocalyptic number.

It is an amenable number.

211431432308 is a deficient number, since it is larger than the sum of its proper divisors (158573574238).

211431432308 is a wasteful number, since it uses less digits than its factorization.

211431432308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52857858081 (or 52857858079 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 211431432308 in words is "two hundred eleven billion, four hundred thirty-one million, four hundred thirty-two thousand, three hundred eight".