125443123031 has 2 divisors, whose sum is σ = 125443123032. Its totient is φ = 125443123030.

The previous prime is 125443122997. The next prime is 125443123051. The reversal of 125443123031 is 130321344521.

It is a strong prime.

It is an emirp because it is prime and its reverse (130321344521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125443123031 - 2⁶ = 125443122967 is a prime.

It is a super-2 number, since 2×125443123031² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 125443122985 and 125443123003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125443123051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62721561515 + 62721561516.

It is an arithmetic number, because the mean of its divisors is an integer number (62721561516).

Almost surely, 2^125443123031 is an apocalyptic number.

125443123031 is a deficient number, since it is larger than the sum of its proper divisors (1).

125443123031 is an equidigital number, since it uses as much as digits as its factorization.

125443123031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 125443123031 its reverse (130321344521), we get a palindrome (255764467552).

The spelling of 125443123031 in words is "one hundred twenty-five billion, four hundred forty-three million, one hundred twenty-three thousand, thirty-one".