20131140125 has 16 divisors (see below), whose sum is σ = 25127901552. Its totient is φ = 16102195200.

The previous prime is 20131140109. The next prime is 20131140187. The reversal of 20131140125 is 52104113102.

It can be written as a sum of positive squares in 8 ways, for example, as 7094524441 + 13036615684 = 84229^2 + 114178^2 .

It is not a de Polignac number, because 20131140125 - 2⁴ = 20131140109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20131140097 and 20131140106.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1082909 + ... + 1101341.

It is an arithmetic number, because the mean of its divisors is an integer number (1570493847).

Almost surely, 2^20131140125 is an apocalyptic number.

20131140125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20131140125 is a deficient number, since it is larger than the sum of its proper divisors (4996761427).

20131140125 is an equidigital number, since it uses as much as digits as its factorization.

20131140125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27185 (or 27175 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 20131140125 its reverse (52104113102), we get a palindrome (72235253227).

The spelling of 20131140125 in words is "twenty billion, one hundred thirty-one million, one hundred forty thousand, one hundred twenty-five".