40125031 has 2 divisors, whose sum is σ = 40125032. Its totient is φ = 40125030.

The previous prime is 40125023. The next prime is 40125037. The reversal of 40125031 is 13052104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40125031 - 2³ = 40125023 is a prime.

It is a super-2 number, since 2×40125031² = 3220036225501922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40124996 and 40125014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40125037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20062515 + 20062516.

It is an arithmetic number, because the mean of its divisors is an integer number (20062516).

Almost surely, 2^40125031 is an apocalyptic number.

40125031 is a deficient number, since it is larger than the sum of its proper divisors (1).

40125031 is an equidigital number, since it uses as much as digits as its factorization.

40125031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 40125031 is about 6334.4321766043. The cubic root of 40125031 is about 342.3511520438.

Adding to 40125031 its reverse (13052104), we get a palindrome (53177135).

The spelling of 40125031 in words is "forty million, one hundred twenty-five thousand, thirty-one".