131230463221 has 32 divisors (see below), whose sum is σ = 163286323200. Its totient is φ = 103617377280.

The previous prime is 131230463183. The next prime is 131230463237. The reversal of 131230463221 is 122364032131.

It is a happy number.

It is not a de Polignac number, because 131230463221 - 2¹³ = 131230455029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131230463221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131230403221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17107975 + ... + 17115643.

It is an arithmetic number, because the mean of its divisors is an integer number (5102697600).

Almost surely, 2^131230463221 is an apocalyptic number.

131230463221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131230463221 is a deficient number, since it is larger than the sum of its proper divisors (32055859979).

131230463221 is a wasteful number, since it uses less digits than its factorization.

131230463221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14749.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 131230463221 its reverse (122364032131), we get a palindrome (253594495352).

The spelling of 131230463221 in words is "one hundred thirty-one billion, two hundred thirty million, four hundred sixty-three thousand, two hundred twenty-one".