211431020402 has 8 divisors (see below), whose sum is σ = 362453177856. Its totient is φ = 90613294452.

The previous prime is 211431020393. The next prime is 211431020431. The reversal of 211431020402 is 204020134112.

211431020402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7551107858 + ... + 7551107885.

It is an arithmetic number, because the mean of its divisors is an integer number (45306647232).

Almost surely, 2^211431020402 is an apocalyptic number.

211431020402 is a deficient number, since it is larger than the sum of its proper divisors (151022157454).

211431020402 is a wasteful number, since it uses less digits than its factorization.

211431020402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15102215752.

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

Adding to 211431020402 its reverse (204020134112), we get a palindrome (415451154514).

The spelling of 211431020402 in words is "two hundred eleven billion, four hundred thirty-one million, twenty thousand, four hundred two".