20120312130 has 16 divisors (see below), whose sum is σ = 48288749184. Its totient is φ = 5365416560.

The previous prime is 20120312099. The next prime is 20120312167. The reversal of 20120312130 is 3121302102.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335338506 + ... + 335338565.

It is an arithmetic number, because the mean of its divisors is an integer number (3018046824).

Almost surely, 2^20120312130 is an apocalyptic number.

20120312130 is an abundant number, since it is smaller than the sum of its proper divisors (28168437054).

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

20120312130 is a wasteful number, since it uses less digits than its factorization.

20120312130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670677081.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20120312130 its reverse (3121302102), we get a palindrome (23241614232).

The spelling of 20120312130 in words is "twenty billion, one hundred twenty million, three hundred twelve thousand, one hundred thirty".