211401440321431 has 8 divisors (see below), whose sum is σ = 220649705194464. Its totient is φ = 202157916940320.

The previous prime is 211401440321417. The next prime is 211401440321471. The reversal of 211401440321431 is 134123044104112.

211401440321431 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 a cyclic number.

It is not a de Polignac number, because 211401440321431 - 2⁷ = 211401440321303 is a prime.

It is a super-2 number, since 2×211401440321431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211401440321393 and 211401440321402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211401440321471) 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, 1185281860 + ... + 1185460201.

It is an arithmetic number, because the mean of its divisors is an integer number (27581213149308).

Almost surely, 2^{211401440321431} is an apocalyptic number.

211401440321431 is a deficient number, since it is larger than the sum of its proper divisors (9248264873033).

211401440321431 is a wasteful number, since it uses less digits than its factorization.

211401440321431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370745961.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 211401440321431 its reverse (134123044104112), we get a palindrome (345524484425543).

The spelling of 211401440321431 in words is "two hundred eleven trillion, four hundred one billion, four hundred forty million, three hundred twenty-one thousand, four hundred thirty-one".