21311300130 has 32 divisors (see below), whose sum is σ = 54155775744. Its totient is φ = 5348718336.

The previous prime is 21311300123. The next prime is 21311300137. The reversal of 21311300130 is 3100311312.

It is an interprime number because it is at equal distance from previous prime (21311300123) and next prime (21311300137).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (21311300137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20892922 + ... + 20893941.

It is an arithmetic number, because the mean of its divisors is an integer number (1692367992).

Almost surely, 2^21311300130 is an apocalyptic number.

21311300130 is an abundant number, since it is smaller than the sum of its proper divisors (32844475614).

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

21311300130 is a wasteful number, since it uses less digits than its factorization.

21311300130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41786890.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21311300130 its reverse (3100311312), we get a palindrome (24411611442).

The spelling of 21311300130 in words is "twenty-one billion, three hundred eleven million, three hundred thousand, one hundred thirty".