131131000328 has 32 divisors (see below), whose sum is σ = 254558467800. Its totient is φ = 63252467712.

The previous prime is 131131000327. The next prime is 131131000331. The reversal of 131131000328 is 823000131131.

It can be written as a sum of positive squares in 4 ways, for example, as 129558243364 + 1572756964 = 359942^2 + 39658^2 .

It is a super-2 number, since 2×131131000328² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131131000327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50126 + ... + 514562.

Almost surely, 2^131131000328 is an apocalyptic number.

It is an amenable number.

131131000328 is a deficient number, since it is larger than the sum of its proper divisors (123427467472).

131131000328 is a wasteful number, since it uses less digits than its factorization.

131131000328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465689 (or 465685 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 131131000328 its reverse (823000131131), we get a palindrome (954131131459).

The spelling of 131131000328 in words is "one hundred thirty-one billion, one hundred thirty-one million, three hundred twenty-eight", and thus it is an aban number.