2131275020 has 24 divisors (see below), whose sum is σ = 5115060384. Its totient is φ = 730722816.

The previous prime is 2131275007. The next prime is 2131275053. The reversal of 2131275020 is 205721312.

It is a happy number.

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, 7611557 + ... + 7611836.

It is an arithmetic number, because the mean of its divisors is an integer number (213127516).

Almost surely, 2^2131275020 is an apocalyptic number.

2131275020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131275020 is an abundant number, since it is smaller than the sum of its proper divisors (2983785364).

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

2131275020 is a wasteful number, since it uses less digits than its factorization.

2131275020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15223409 (or 15223407 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 2131275020 is about 46165.7342625459. The cubic root of 2131275020 is about 1286.9050296516.

Adding to 2131275020 its reverse (205721312), we get a palindrome (2336996332).

The spelling of 2131275020 in words is "two billion, one hundred thirty-one million, two hundred seventy-five thousand, twenty".