131121304513456 has 80 divisors (see below), whose sum is σ = 259800671692800. Its totient is φ = 64079736447744.

The previous prime is 131121304513351. The next prime is 131121304513471. The reversal of 131121304513456 is 654315403121131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4900069005 + ... + 4900095763.

It is an arithmetic number, because the mean of its divisors is an integer number (3247508396160).

Almost surely, 2^{131121304513456} is an apocalyptic number.

131121304513456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131121304513456 is a deficient number, since it is larger than the sum of its proper divisors (128679367179344).

131121304513456 is a wasteful number, since it uses less digits than its factorization.

131121304513456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35306 (or 35300 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

Adding to 131121304513456 its reverse (654315403121131), we get a palindrome (785436707634587).

The spelling of 131121304513456 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, three hundred four million, five hundred thirteen thousand, four hundred fifty-six".