285162831131 has 4 divisors (see below), whose sum is σ = 285781406064. Its totient is φ = 284544256200.

The previous prime is 285162831073. The next prime is 285162831251. The reversal of 285162831131 is 131138261582.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 285162831131 - 2³⁸ = 10284924187 is a prime.

It is a super-2 number, since 2×285162831131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285162861131) 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 3 ways as a sum of consecutive naturals, for example, 309286775 + ... + 309287696.

It is an arithmetic number, because the mean of its divisors is an integer number (71445351516).

Almost surely, 2^285162831131 is an apocalyptic number.

285162831131 is a deficient number, since it is larger than the sum of its proper divisors (618574933).

285162831131 is an equidigital number, since it uses as much as digits as its factorization.

285162831131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618574932.

The product of its digits is 69120, while the sum is 41.

The spelling of 285162831131 in words is "two hundred eighty-five billion, one hundred sixty-two million, eight hundred thirty-one thousand, one hundred thirty-one".