20130310400 has 54 divisors (see below), whose sum is σ = 49825679442. Its totient is φ = 8052121600.

The previous prime is 20130310373. The next prime is 20130310411. The reversal of 20130310400 is 401303102.

It can be written as a sum of positive squares in 3 ways, for example, as 88811776 + 20041498624 = 9424^2 + 141568^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1566281 + ... + 1579080.

Almost surely, 2^20130310400 is an apocalyptic number.

20130310400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130310400 is an abundant number, since it is smaller than the sum of its proper divisors (29695369042).

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

20130310400 is an equidigital number, since it uses as much as digits as its factorization.

20130310400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145387 (or 3145368 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20130310400 its reverse (401303102), we get a palindrome (20531613502).

The spelling of 20130310400 in words is "twenty billion, one hundred thirty million, three hundred ten thousand, four hundred".