2131234020 has 72 divisors (see below), whose sum is σ = 6468658560. Its totient is φ = 567984960.

The previous prime is 2131234013. The next prime is 2131234031. The reversal of 2131234020 is 204321312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2131233984 and 2131234002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 461925 + ... + 466515.

It is an arithmetic number, because the mean of its divisors is an integer number (89842480).

Almost surely, 2^2131234020 is an apocalyptic number.

2131234020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131234020 is an abundant number, since it is smaller than the sum of its proper divisors (4337424540).

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

2131234020 is a wasteful number, since it uses less digits than its factorization.

2131234020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7185 (or 7180 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2131234020 is about 46165.2902081206. The cubic root of 2131234020 is about 1286.8967774014.

Adding to 2131234020 its reverse (204321312), we get a palindrome (2335555332).

The spelling of 2131234020 in words is "two billion, one hundred thirty-one million, two hundred thirty-four thousand, twenty".