36121331 has 2 divisors, whose sum is σ = 36121332. Its totient is φ = 36121330.

The previous prime is 36121307. The next prime is 36121357. The reversal of 36121331 is 13312163.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36121331 - 2¹⁰ = 36120307 is a prime.

It is a super-2 number, since 2×36121331² = 2609501106423122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36121391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18060665 + 18060666.

It is an arithmetic number, because the mean of its divisors is an integer number (18060666).

Almost surely, 2^36121331 is an apocalyptic number.

36121331 is a deficient number, since it is larger than the sum of its proper divisors (1).

36121331 is an equidigital number, since it uses as much as digits as its factorization.

36121331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 20.

The square root of 36121331 is about 6010.1024117730. The cubic root of 36121331 is about 330.5632590546.

Adding to 36121331 its reverse (13312163), we get a palindrome (49433494).

The spelling of 36121331 in words is "thirty-six million, one hundred twenty-one thousand, three hundred thirty-one".