21131032315130 has 32 divisors (see below), whose sum is σ = 41361728130576. Its totient is φ = 7740206429184.

The previous prime is 21131032315121. The next prime is 21131032315171. The reversal of 21131032315130 is 3151323013112.

It can be written as a sum of positive squares in 8 ways, for example, as 14543766149641 + 6587266165489 = 3813629^2 + 2566567^2 .

It is a super-3 number, since 3×21131032315130³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21131032315130.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1679726009 + ... + 1679738588.

Almost surely, 2^{21131032315130} is an apocalyptic number.

21131032315130 is a deficient number, since it is larger than the sum of its proper divisors (20230695815446).

21131032315130 is a wasteful number, since it uses less digits than its factorization.

21131032315130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359464658.

The product of its (nonzero) digits is 1620, while the sum is 26.

Adding to 21131032315130 its reverse (3151323013112), we get a palindrome (24282355328242).

The spelling of 21131032315130 in words is "twenty-one trillion, one hundred thirty-one billion, thirty-two million, three hundred fifteen thousand, one hundred thirty".