130440215 has 4 divisors (see below), whose sum is σ = 156528264. Its totient is φ = 104352168.

The previous prime is 130440197. The next prime is 130440217. The reversal of 130440215 is 512044031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130440215 - 2²⁴ = 113662999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130440217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13044017 + ... + 13044026.

It is an arithmetic number, because the mean of its divisors is an integer number (39132066).

Almost surely, 2^130440215 is an apocalyptic number.

130440215 is a deficient number, since it is larger than the sum of its proper divisors (26088049).

130440215 is an equidigital number, since it uses as much as digits as its factorization.

130440215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26088048.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 130440215 is about 11421.0426406699. The cubic root of 130440215 is about 507.1508627788.

Adding to 130440215 its reverse (512044031), we get a palindrome (642484246).

The spelling of 130440215 in words is "one hundred thirty million, four hundred forty thousand, two hundred fifteen".