130511540 has 24 divisors (see below), whose sum is σ = 278722080. Its totient is φ = 51319328.

The previous prime is 130511503. The next prime is 130511587. The reversal of 130511540 is 45115031.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54122 + ... + 56481.

It is an arithmetic number, because the mean of its divisors is an integer number (11613420).

Almost surely, 2^130511540 is an apocalyptic number.

130511540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130511540 is an abundant number, since it is smaller than the sum of its proper divisors (148210540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130511540 is a wasteful number, since it uses less digits than its factorization.

130511540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110671 (or 110669 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 130511540 is about 11424.1647397085. The cubic root of 130511540 is about 507.2432830093.

Adding to 130511540 its reverse (45115031), we get a palindrome (175626571).

The spelling of 130511540 in words is "one hundred thirty million, five hundred eleven thousand, five hundred forty".