131061221654 has 8 divisors (see below), whose sum is σ = 214463817288. Its totient is φ = 59573282560.

The previous prime is 131061221639. The next prime is 131061221663. The reversal of 131061221654 is 456122160131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131061221654.

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 3 ways as a sum of consecutive naturals, for example, 2978664107 + ... + 2978664150.

It is an arithmetic number, because the mean of its divisors is an integer number (26807977161).

Almost surely, 2^131061221654 is an apocalyptic number.

131061221654 is a deficient number, since it is larger than the sum of its proper divisors (83402595634).

131061221654 is a wasteful number, since it uses less digits than its factorization.

131061221654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5957328270.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 131061221654 its reverse (456122160131), we get a palindrome (587183381785).

The spelling of 131061221654 in words is "one hundred thirty-one billion, sixty-one million, two hundred twenty-one thousand, six hundred fifty-four".