5231142081 has 40 divisors (see below), whose sum is σ = 8723139744. Its totient is φ = 3096636480.

The previous prime is 5231142043. The next prime is 5231142101. The reversal of 5231142081 is 1802411325.

5231142081 is a `hidden beast` number, since 5 + 231 + 1 + 420 + 8 + 1 = 666.

It is not a de Polignac number, because 5231142081 - 2¹⁵ = 5231109313 is a prime.

It is a super-2 number, since 2×5231142081² = 54729694943218021122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (5231142041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29956 + ... + 106581.

Almost surely, 2^5231142081 is an apocalyptic number.

It is an amenable number.

5231142081 is a deficient number, since it is larger than the sum of its proper divisors (3491997663).

5231142081 is a wasteful number, since it uses less digits than its factorization.

5231142081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136603 (or 136594 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 5231142081 is about 72326.6346583332. The cubic root of 5231142081 is about 1735.9298535059.

The spelling of 5231142081 in words is "five billion, two hundred thirty-one million, one hundred forty-two thousand, eighty-one".