211423041340 has 24 divisors (see below), whose sum is σ = 507415299552. Its totient is φ = 72487899840.

The previous prime is 211423041293. The next prime is 211423041341. The reversal of 211423041340 is 43140324112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211423041341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755082151 + ... + 755082430.

It is an arithmetic number, because the mean of its divisors is an integer number (21142304148).

Almost surely, 2^211423041340 is an apocalyptic number.

211423041340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211423041340 is an abundant number, since it is smaller than the sum of its proper divisors (295992258212).

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

211423041340 is a wasteful number, since it uses less digits than its factorization.

211423041340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510164597 (or 1510164595 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 211423041340 its reverse (43140324112), we get a palindrome (254563365452).

The spelling of 211423041340 in words is "two hundred eleven billion, four hundred twenty-three million, forty-one thousand, three hundred forty".