130223145 has 64 divisors (see below), whose sum is σ = 240033024. Its totient is φ = 59719680.

The previous prime is 130223141. The next prime is 130223147. The reversal of 130223145 is 541322031.

It is not a de Polignac number, because 130223145 - 2² = 130223141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130223141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 540225 + ... + 540465.

It is an arithmetic number, because the mean of its divisors is an integer number (3750516).

Almost surely, 2^130223145 is an apocalyptic number.

130223145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130223145 is a deficient number, since it is larger than the sum of its proper divisors (109809879).

130223145 is a wasteful number, since it uses less digits than its factorization.

130223145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 130223145 is about 11411.5356109509. The cubic root of 130223145 is about 506.8693842461.

Adding to 130223145 its reverse (541322031), we get a palindrome (671545176).

The spelling of 130223145 in words is "one hundred thirty million, two hundred twenty-three thousand, one hundred forty-five".