40156120031 has 2 divisors, whose sum is σ = 40156120032. Its totient is φ = 40156120030.

The previous prime is 40156119929. The next prime is 40156120061. The reversal of 40156120031 is 13002165104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40156120031 is a prime.

It is a super-2 number, since 2×40156120031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40156119979 and 40156120006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40156120061) 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, 20078060015 + 20078060016.

It is an arithmetic number, because the mean of its divisors is an integer number (20078060016).

Almost surely, 2^40156120031 is an apocalyptic number.

40156120031 is a deficient number, since it is larger than the sum of its proper divisors (1).

40156120031 is an equidigital number, since it uses as much as digits as its factorization.

40156120031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 40156120031 its reverse (13002165104), we get a palindrome (53158285135).

The spelling of 40156120031 in words is "forty billion, one hundred fifty-six million, one hundred twenty thousand, thirty-one".