36231421 has 2 divisors, whose sum is σ = 36231422. Its totient is φ = 36231420.

The previous prime is 36231379. The next prime is 36231439. The reversal of 36231421 is 12413263.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36060025 + 171396 = 6005^2 + 414^2 .

It is a cyclic number.

It is not a de Polignac number, because 36231421 - 2¹¹ = 36229373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 36231392 and 36231401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36231521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18115710 + 18115711.

It is an arithmetic number, because the mean of its divisors is an integer number (18115711).

Almost surely, 2^36231421 is an apocalyptic number.

It is an amenable number.

36231421 is a deficient number, since it is larger than the sum of its proper divisors (1).

36231421 is an equidigital number, since it uses as much as digits as its factorization.

36231421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 36231421 is about 6019.2541896816. The cubic root of 36231421 is about 330.8987468795.

Adding to 36231421 its reverse (12413263), we get a palindrome (48644684).

The spelling of 36231421 in words is "thirty-six million, two hundred thirty-one thousand, four hundred twenty-one".