2111421431 has 8 divisors (see below), whose sum is σ = 2414593920. Its totient is φ = 1808634168.

The previous prime is 2111421409. The next prime is 2111421443. The reversal of 2111421431 is 1341241112.

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 2111421431 - 2¹⁴ = 2111405047 is a prime.

It is a super-2 number, since 2×2111421431² = 8916200918572175522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111421401) 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, 84461 + ... + 106566.

It is an arithmetic number, because the mean of its divisors is an integer number (301824240).

Almost surely, 2^2111421431 is an apocalyptic number.

2111421431 is a deficient number, since it is larger than the sum of its proper divisors (303172489).

2111421431 is a wasteful number, since it uses less digits than its factorization.

2111421431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192613.

The product of its digits is 192, while the sum is 20.

The square root of 2111421431 is about 45950.2059951857. The cubic root of 2111421431 is about 1282.8965634746.

Adding to 2111421431 its reverse (1341241112), we get a palindrome (3452662543).

The spelling of 2111421431 in words is "two billion, one hundred eleven million, four hundred twenty-one thousand, four hundred thirty-one".