2125300031 has 4 divisors (see below), whose sum is σ = 2130097992. Its totient is φ = 2120502072.

The previous prime is 2125299991. The next prime is 2125300039. The reversal of 2125300031 is 1300035212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2125300031 is a prime.

It is a super-2 number, since 2×2125300031² = 9033800443537201922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2125299982 and 2125300009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125300039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2398316 + ... + 2399201.

It is an arithmetic number, because the mean of its divisors is an integer number (532524498).

Almost surely, 2^2125300031 is an apocalyptic number.

2125300031 is a deficient number, since it is larger than the sum of its proper divisors (4797961).

2125300031 is an equidigital number, since it uses as much as digits as its factorization.

2125300031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4797960.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 2125300031 is about 46100.9764647128. The cubic root of 2125300031 is about 1285.7012994767.

Adding to 2125300031 its reverse (1300035212), we get a palindrome (3425335243).

The spelling of 2125300031 in words is "two billion, one hundred twenty-five million, three hundred thousand, thirty-one".