130344021 has 12 divisors (see below), whose sum is σ = 188556160. Its totient is φ = 86766120.

The previous prime is 130344017. The next prime is 130344023. The reversal of 130344021 is 120443031.

It is not a de Polignac number, because 130344021 - 2² = 130344017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130343985 and 130344003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130344023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4261 + ... + 16698.

Almost surely, 2^130344021 is an apocalyptic number.

It is an amenable number.

130344021 is a deficient number, since it is larger than the sum of its proper divisors (58212139).

130344021 is a wasteful number, since it uses less digits than its factorization.

130344021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21656 (or 21653 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 130344021 is about 11416.8306022293. The cubic root of 130344021 is about 507.0261648670.

Adding to 130344021 its reverse (120443031), we get a palindrome (250787052).

The spelling of 130344021 in words is "one hundred thirty million, three hundred forty-four thousand, twenty-one".