31236061 has 2 divisors, whose sum is σ = 31236062. Its totient is φ = 31236060.

The previous prime is 31236013. The next prime is 31236067. The reversal of 31236061 is 16063213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30415225 + 820836 = 5515^2 + 906^2 .

It is an emirp because it is prime and its reverse (16063213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31236061 - 2⁷ = 31235933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31236067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15618030 + 15618031.

It is an arithmetic number, because the mean of its divisors is an integer number (15618031).

Almost surely, 2^31236061 is an apocalyptic number.

It is an amenable number.

31236061 is a deficient number, since it is larger than the sum of its proper divisors (1).

31236061 is an equidigital number, since it uses as much as digits as its factorization.

31236061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 31236061 is about 5588.9230626302. The cubic root of 31236061 is about 314.9334234035.

Adding to 31236061 its reverse (16063213), we get a palindrome (47299274).

The spelling of 31236061 in words is "thirty-one million, two hundred thirty-six thousand, sixty-one".