40286531 has 2 divisors, whose sum is σ = 40286532. Its totient is φ = 40286530.

The previous prime is 40286527. The next prime is 40286551. The reversal of 40286531 is 13568204.

40286531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40286531 - 2² = 40286527 is a prime.

It is a super-2 number, since 2×40286531² = 3246009160027922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40286494 and 40286503.

It is not a weakly prime, because it can be changed into another prime (40286551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20143265 + 20143266.

It is an arithmetic number, because the mean of its divisors is an integer number (20143266).

Almost surely, 2^40286531 is an apocalyptic number.

40286531 is a deficient number, since it is larger than the sum of its proper divisors (1).

40286531 is an equidigital number, since it uses as much as digits as its factorization.

40286531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 40286531 is about 6347.1671633887. The cubic root of 40286531 is about 342.8098490735.

The spelling of 40286531 in words is "forty million, two hundred eighty-six thousand, five hundred thirty-one".