2111311412431 has 4 divisors (see below), whose sum is σ = 2273719982632. Its totient is φ = 1948902842232.

The previous prime is 2111311412417. The next prime is 2111311412479. The reversal of 2111311412431 is 1342141131112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2111311412431 - 2⁹ = 2111311411919 is a prime.

It is a super-2 number, since 2×2111311412431² (a number of 25 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 = 2111311412396 and 2111311412405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111311412401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81204285081 + ... + 81204285106.

It is an arithmetic number, because the mean of its divisors is an integer number (568429995658).

Almost surely, 2^{2111311412431} is an apocalyptic number.

2111311412431 is a deficient number, since it is larger than the sum of its proper divisors (162408570201).

2111311412431 is a wasteful number, since it uses less digits than its factorization.

2111311412431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162408570200.

The product of its digits is 576, while the sum is 25.

Adding to 2111311412431 its reverse (1342141131112), we get a palindrome (3453452543543).

The spelling of 2111311412431 in words is "two trillion, one hundred eleven billion, three hundred eleven million, four hundred twelve thousand, four hundred thirty-one".