131423041221 has 8 divisors (see below), whose sum is σ = 175382704320. Its totient is φ = 87539369472.

The previous prime is 131423041181. The next prime is 131423041223. The reversal of 131423041221 is 122140324131.

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

It is not a de Polignac number, because 131423041221 - 2⁹ = 131423040709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131423041191 and 131423041200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131423041223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18993801 + ... + 19000718.

It is an arithmetic number, because the mean of its divisors is an integer number (21922838040).

Almost surely, 2^131423041221 is an apocalyptic number.

It is an amenable number.

131423041221 is a deficient number, since it is larger than the sum of its proper divisors (43959663099).

131423041221 is a wasteful number, since it uses less digits than its factorization.

131423041221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37995675.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 131423041221 its reverse (122140324131), we get a palindrome (253563365352).

The spelling of 131423041221 in words is "one hundred thirty-one billion, four hundred twenty-three million, forty-one thousand, two hundred twenty-one".