2131102012 has 24 divisors (see below), whose sum is σ = 4101765696. Its totient is φ = 962657088.

The previous prime is 2131102009. The next prime is 2131102021. The reversal of 2131102012 is 2102011312.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 2131101983 and 2131102001.

It is a congruent 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, 433543 + ... + 438430.

It is an arithmetic number, because the mean of its divisors is an integer number (170906904).

Almost surely, 2^2131102012 is an apocalyptic number.

It is an amenable number.

2131102012 is a deficient number, since it is larger than the sum of its proper divisors (1970663684).

2131102012 is a wasteful number, since it uses less digits than its factorization.

2131102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872037 (or 872035 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2131102012 is about 46163.8604538225. The cubic root of 2131102012 is about 1286.8702068518.

Adding to 2131102012 its reverse (2102011312), we get a palindrome (4233113324).

The spelling of 2131102012 in words is "two billion, one hundred thirty-one million, one hundred two thousand, twelve".