131023231316 has 24 divisors (see below), whose sum is σ = 231626069640. Its totient is φ = 64844720000.

The previous prime is 131023231309. The next prime is 131023231343. The reversal of 131023231316 is 613132320131.

It can be written as a sum of positive squares in 4 ways, for example, as 13970294416 + 117052936900 = 118196^2 + 342130^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1451390 + ... + 1539018.

It is an arithmetic number, because the mean of its divisors is an integer number (9651086235).

Almost surely, 2^131023231316 is an apocalyptic number.

It is an amenable number.

131023231316 is a deficient number, since it is larger than the sum of its proper divisors (100602838324).

131023231316 is a wasteful number, since it uses less digits than its factorization.

131023231316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91435 (or 91433 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 131023231316 its reverse (613132320131), we get a palindrome (744155551447).

The spelling of 131023231316 in words is "one hundred thirty-one billion, twenty-three million, two hundred thirty-one thousand, three hundred sixteen".