130020343400 has 24 divisors (see below), whose sum is σ = 302297298870. Its totient is φ = 52008137280.

The previous prime is 130020343351. The next prime is 130020343403. The reversal of 130020343400 is 4343020031.

It can be written as a sum of positive squares in 3 ways, for example, as 51341215396 + 78679128004 = 226586^2 + 280498^2 .

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

It is not an unprimeable number, because it can be changed into a prime (130020343403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 325050659 + ... + 325051058.

Almost surely, 2^130020343400 is an apocalyptic number.

130020343400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130020343400 is an abundant number, since it is smaller than the sum of its proper divisors (172276955470).

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

130020343400 is a wasteful number, since it uses less digits than its factorization.

130020343400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650101733 (or 650101724 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 130020343400 its reverse (4343020031), we get a palindrome (134363363431).

The spelling of 130020343400 in words is "one hundred thirty billion, twenty million, three hundred forty-three thousand, four hundred".