36143531 has 2 divisors, whose sum is σ = 36143532. Its totient is φ = 36143530.

The previous prime is 36143507. The next prime is 36143543. The reversal of 36143531 is 13534163.

It is a strong prime.

It is an emirp because it is prime and its reverse (13534163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36143531 - 2⁶ = 36143467 is a prime.

It is a super-2 number, since 2×36143531² = 2612709666295922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36143531.

It is not a weakly prime, because it can be changed into another prime (36143231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18071765 + 18071766.

It is an arithmetic number, because the mean of its divisors is an integer number (18071766).

Almost surely, 2^36143531 is an apocalyptic number.

36143531 is a deficient number, since it is larger than the sum of its proper divisors (1).

36143531 is an equidigital number, since it uses as much as digits as its factorization.

36143531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

The square root of 36143531 is about 6011.9490184132. The cubic root of 36143531 is about 330.6309660600.

Adding to 36143531 its reverse (13534163), we get a palindrome (49677694).

The spelling of 36143531 in words is "thirty-six million, one hundred forty-three thousand, five hundred thirty-one".