20530431130 has 32 divisors (see below), whose sum is σ = 40334381568. Its totient is φ = 7461892800.

The previous prime is 20530431109. The next prime is 20530431169. The reversal of 20530431130 is 3113403502.

It is a Harshad number since it is a multiple of its sum of digits (22).

20530431130 is a modest number, since divided by 431130 gives 20530 as remainder.

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 15 ways as a sum of consecutive naturals, for example, 180375 + ... + 271285.

It is an arithmetic number, because the mean of its divisors is an integer number (1260449424).

Almost surely, 2^20530431130 is an apocalyptic number.

20530431130 is a deficient number, since it is larger than the sum of its proper divisors (19803950438).

20530431130 is a wasteful number, since it uses less digits than its factorization.

20530431130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92982.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 20530431130 its reverse (3113403502), we get a palindrome (23643834632).

The spelling of 20530431130 in words is "twenty billion, five hundred thirty million, four hundred thirty-one thousand, one hundred thirty".