2131011251 has 8 divisors (see below), whose sum is σ = 2277454320. Its totient is φ = 1986911488.

The previous prime is 2131011247. The next prime is 2131011277. The reversal of 2131011251 is 1521101312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131011251 - 2² = 2131011247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131011851) 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 7 ways as a sum of consecutive naturals, for example, 583946 + ... + 587583.

It is an arithmetic number, because the mean of its divisors is an integer number (284681790).

Almost surely, 2^2131011251 is an apocalyptic number.

2131011251 is a deficient number, since it is larger than the sum of its proper divisors (146443069).

2131011251 is a wasteful number, since it uses less digits than its factorization.

2131011251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171653.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 2131011251 is about 46162.8774124837. The cubic root of 2131011251 is about 1286.8519378554.

Adding to 2131011251 its reverse (1521101312), we get a palindrome (3652112563).

The spelling of 2131011251 in words is "two billion, one hundred thirty-one million, eleven thousand, two hundred fifty-one".