36331531 has 2 divisors, whose sum is σ = 36331532. Its totient is φ = 36331530.

The previous prime is 36331523. The next prime is 36331541. The reversal of 36331531 is 13513363.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36331531 - 2³ = 36331523 is a prime.

It is a super-2 number, since 2×36331531² = 2639960289607922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36331496 and 36331505.

It is not a weakly prime, because it can be changed into another prime (36331501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18165765 + 18165766.

It is an arithmetic number, because the mean of its divisors is an integer number (18165766).

Almost surely, 2^36331531 is an apocalyptic number.

36331531 is a deficient number, since it is larger than the sum of its proper divisors (1).

36331531 is an equidigital number, since it uses as much as digits as its factorization.

36331531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 25.

The square root of 36331531 is about 6027.5642675960. The cubic root of 36331531 is about 331.2032322249.

Adding to 36331531 its reverse (13513363), we get a palindrome (49844894).

The spelling of 36331531 in words is "thirty-six million, three hundred thirty-one thousand, five hundred thirty-one".