130306561 has 8 divisors (see below), whose sum is σ = 162460224. Its totient is φ = 101537520.

The previous prime is 130306537. The next prime is 130306567. The reversal of 130306561 is 165603031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130306561 - 2¹¹ = 130304513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130306567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846070 + ... + 846223.

It is an arithmetic number, because the mean of its divisors is an integer number (20307528).

Almost surely, 2^130306561 is an apocalyptic number.

130306561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130306561 is a deficient number, since it is larger than the sum of its proper divisors (32153663).

130306561 is a wasteful number, since it uses less digits than its factorization.

130306561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692311.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 130306561 is about 11415.1899239566. The cubic root of 130306561 is about 506.9775882368.

Adding to 130306561 its reverse (165603031), we get a palindrome (295909592).

It can be divided in two parts, 13030 and 6561, that added together give a palindrome (19591).

The spelling of 130306561 in words is "one hundred thirty million, three hundred six thousand, five hundred sixty-one".