130531221530145 has 24 divisors (see below), whose sum is σ = 226807305901800. Its totient is φ = 69446439611136.

The previous prime is 130531221530119. The next prime is 130531221530147. The reversal of 130531221530145 is 541035122135031.

It is a happy number.

130531221530145 is a `hidden beast` number, since 1 + 3 + 0 + 53 + 12 + 21 + 530 + 1 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 55742470023744 + 74788751506401 = 7466088^2 + 8648049^2 .

It is not a de Polignac number, because 130531221530145 - 2¹² = 130531221526049 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (130531221530147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3546062050 + ... + 3546098859.

It is an arithmetic number, because the mean of its divisors is an integer number (9450304412575).

Almost surely, 2^{130531221530145} is an apocalyptic number.

130531221530145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130531221530145 is a deficient number, since it is larger than the sum of its proper divisors (96276084371655).

130531221530145 is a wasteful number, since it uses less digits than its factorization.

130531221530145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7092161329 (or 7092161326 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 130531221530145 its reverse (541035122135031), we get a palindrome (671566343665176).

The spelling of 130531221530145 in words is "one hundred thirty trillion, five hundred thirty-one billion, two hundred twenty-one million, five hundred thirty thousand, one hundred forty-five".