2135443531 has 16 divisors (see below), whose sum is σ = 2340280768. Its totient is φ = 1936483200.

The previous prime is 2135443477. The next prime is 2135443537. The reversal of 2135443531 is 1353445312.

It is a cyclic number.

It is not a de Polignac number, because 2135443531 - 2¹⁵ = 2135410763 is a prime.

It is a super-2 number, since 2×2135443531² = 9120238148179495922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2135443493 and 2135443502.

It is not an unprimeable number, because it can be changed into a prime (2135443537) 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, 1146541 + ... + 1148401.

It is an arithmetic number, because the mean of its divisors is an integer number (146267548).

Almost surely, 2^2135443531 is an apocalyptic number.

2135443531 is a deficient number, since it is larger than the sum of its proper divisors (204837237).

2135443531 is a wasteful number, since it uses less digits than its factorization.

2135443531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382.

The product of its digits is 21600, while the sum is 31.

The square root of 2135443531 is about 46210.8594488352. The cubic root of 2135443531 is about 1287.7434924025.

Adding to 2135443531 its reverse (1353445312), we get a palindrome (3488888843).

The spelling of 2135443531 in words is "two billion, one hundred thirty-five million, four hundred forty-three thousand, five hundred thirty-one".