21232313130 has 64 divisors (see below), whose sum is σ = 58250723328. Its totient is φ = 4851973440.

The previous prime is 21232313119. The next prime is 21232313273. The reversal of 21232313130 is 3131323212.

It is a super-2 number, since 2×21232313130² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21232313097 and 21232313106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1184535 + ... + 1202325.

It is an arithmetic number, because the mean of its divisors is an integer number (910167552).

Almost surely, 2^21232313130 is an apocalyptic number.

21232313130 is an abundant number, since it is smaller than the sum of its proper divisors (37018410198).

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

21232313130 is a wasteful number, since it uses less digits than its factorization.

21232313130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23491.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21232313130 its reverse (3131323212), we get a palindrome (24363636342).

The spelling of 21232313130 in words is "twenty-one billion, two hundred thirty-two million, three hundred thirteen thousand, one hundred thirty".