2113443531 has 12 divisors (see below), whose sum is σ = 3058827408. Its totient is φ = 1406158224.

The previous prime is 2113443503. The next prime is 2113443533. The reversal of 2113443531 is 1353443112.

It is a happy number.

2113443531 is a `hidden beast` number, since 211 + 3 + 443 + 5 + 3 + 1 = 666.

It is not a de Polignac number, because 2113443531 - 2⁵ = 2113443499 is a prime.

It is a super-2 number, since 2×2113443531² = 8933287117451495922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2113443495 and 2113443504.

It is not an unprimeable number, because it can be changed into a prime (2113443533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228900 + ... + 237953.

It is an arithmetic number, because the mean of its divisors is an integer number (254902284).

Almost surely, 2^2113443531 is an apocalyptic number.

2113443531 is a deficient number, since it is larger than the sum of its proper divisors (945383877).

2113443531 is a wasteful number, since it uses less digits than its factorization.

2113443531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467362 (or 467359 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2113443531 is about 45972.2038953975. The cubic root of 2113443531 is about 1283.3059744697.

Adding to 2113443531 its reverse (1353443112), we get a palindrome (3466886643).

The spelling of 2113443531 in words is "two billion, one hundred thirteen million, four hundred forty-three thousand, five hundred thirty-one".