36431431 has 2 divisors, whose sum is σ = 36431432. Its totient is φ = 36431430.

The previous prime is 36431429. The next prime is 36431443. The reversal of 36431431 is 13413463.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36431431 - 2¹ = 36431429 is a prime.

It is a super-2 number, since 2×36431431² = 2654498329415522, which contains 22 as substring.

Together with 36431429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 36431396 and 36431405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36438431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18215715 + 18215716.

It is an arithmetic number, because the mean of its divisors is an integer number (18215716).

Almost surely, 2^36431431 is an apocalyptic number.

36431431 is a deficient number, since it is larger than the sum of its proper divisors (1).

36431431 is an equidigital number, since it uses as much as digits as its factorization.

36431431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 25.

The square root of 36431431 is about 6035.8455082946. The cubic root of 36431431 is about 331.5065217905.

Adding to 36431431 its reverse (13413463), we get a palindrome (49844894).

The spelling of 36431431 in words is "thirty-six million, four hundred thirty-one thousand, four hundred thirty-one".