2211031243431 has 16 divisors (see below), whose sum is σ = 3312406360800. Its totient is φ = 1457458795584.

The previous prime is 2211031243403. The next prime is 2211031243501. The reversal of 2211031243431 is 1343421301122.

2211031243431 is a `hidden beast` number, since 2 + 2 + 1 + 1 + 0 + 312 + 4 + 343 + 1 = 666.

It is not a de Polignac number, because 2211031243431 - 2²⁶ = 2210964134567 is a prime.

It is a super-2 number, since 2×2211031243431² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2211031243395 and 2211031243404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211031243831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460054036 + ... + 460058841.

It is an arithmetic number, because the mean of its divisors is an integer number (207025397550).

Almost surely, 2^{2211031243431} is an apocalyptic number.

2211031243431 is a deficient number, since it is larger than the sum of its proper divisors (1101375117369).

2211031243431 is an equidigital number, since it uses as much as digits as its factorization.

2211031243431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920112975 (or 920112969 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 2211031243431 its reverse (1343421301122), we get a palindrome (3554452544553).

The spelling of 2211031243431 in words is "two trillion, two hundred eleven billion, thirty-one million, two hundred forty-three thousand, four hundred thirty-one".