2131022149 has 4 divisors (see below), whose sum is σ = 2131117920. Its totient is φ = 2130926380.

The previous prime is 2131022123. The next prime is 2131022161. The reversal of 2131022149 is 9412201312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2131022149 - 2⁷ = 2131022021 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 (2131022189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4854 + ... + 65464.

It is an arithmetic number, because the mean of its divisors is an integer number (532779480).

Almost surely, 2^2131022149 is an apocalyptic number.

It is an amenable number.

2131022149 is a deficient number, since it is larger than the sum of its proper divisors (95771).

2131022149 is an equidigital number, since it uses as much as digits as its factorization.

2131022149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95770.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2131022149 is about 46162.9954509020. The cubic root of 2131022149 is about 1286.8541315070.

The spelling of 2131022149 in words is "two billion, one hundred thirty-one million, twenty-two thousand, one hundred forty-nine".