131453015221 has 16 divisors (see below), whose sum is σ = 144281292480. Its totient is φ = 118773256320.

The previous prime is 131453015209. The next prime is 131453015237. The reversal of 131453015221 is 122510354131.

It is a cyclic number.

It is not a de Polignac number, because 131453015221 - 2⁵ = 131453015189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131453015221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131453015251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1156681 + ... + 1265233.

It is an arithmetic number, because the mean of its divisors is an integer number (9017580780).

Almost surely, 2^131453015221 is an apocalyptic number.

131453015221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131453015221 is a deficient number, since it is larger than the sum of its proper divisors (12828277259).

131453015221 is a wasteful number, since it uses less digits than its factorization.

131453015221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109236.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 131453015221 its reverse (122510354131), we get a palindrome (253963369352).

The spelling of 131453015221 in words is "one hundred thirty-one billion, four hundred fifty-three million, fifteen thousand, two hundred twenty-one".