2131012903 has 4 divisors (see below), whose sum is σ = 2139305040. Its totient is φ = 2122720768.

The previous prime is 2131012831. The next prime is 2131012907. The reversal of 2131012903 is 3092101312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2131012903 - 2⁹ = 2131012391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131012907) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4145683 + ... + 4146196.

It is an arithmetic number, because the mean of its divisors is an integer number (534826260).

Almost surely, 2^2131012903 is an apocalyptic number.

2131012903 is a deficient number, since it is larger than the sum of its proper divisors (8292137).

2131012903 is an equidigital number, since it uses as much as digits as its factorization.

2131012903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8292136.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 2131012903 is about 46162.8953056456. The cubic root of 2131012903 is about 1286.8522703859.

The spelling of 2131012903 in words is "two billion, one hundred thirty-one million, twelve thousand, nine hundred three".