3135531231 has 12 divisors (see below), whose sum is σ = 5176115152. Its totient is φ = 1791732096.

The previous prime is 3135531229. The next prime is 3135531307. The reversal of 3135531231 is 1321355313.

3135531231 is a `hidden beast` number, since 313 + 5 + 5 + 312 + 31 = 666.

It is not a de Polignac number, because 3135531231 - 2¹ = 3135531229 is a prime.

It is a super-2 number, since 2×3135531231² = 19663112201152750722, 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 = 3135531195 and 3135531204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3135535231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24885106 + ... + 24885231.

Almost surely, 2^3135531231 is an apocalyptic number.

3135531231 is a deficient number, since it is larger than the sum of its proper divisors (2040583921).

3135531231 is a wasteful number, since it uses less digits than its factorization.

3135531231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49770350 (or 49770347 counting only the distinct ones).

The product of its digits is 4050, while the sum is 27.

The square root of 3135531231 is about 55995.8144060786. The cubic root of 3135531231 is about 1463.6493480161.

Adding to 3135531231 its reverse (1321355313), we get a palindrome (4456886544).

The spelling of 3135531231 in words is "three billion, one hundred thirty-five million, five hundred thirty-one thousand, two hundred thirty-one".