31536101 has 2 divisors, whose sum is σ = 31536102. Its totient is φ = 31536100.

The previous prime is 31536097. The next prime is 31536161. The reversal of 31536101 is 10163513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30813601 + 722500 = 5551^2 + 850^2 .

It is a cyclic number.

It is not a de Polignac number, because 31536101 - 2² = 31536097 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31536161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15768050 + 15768051.

It is an arithmetic number, because the mean of its divisors is an integer number (15768051).

Almost surely, 2^31536101 is an apocalyptic number.

It is an amenable number.

31536101 is a deficient number, since it is larger than the sum of its proper divisors (1).

31536101 is an equidigital number, since it uses as much as digits as its factorization.

31536101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 31536101 is about 5615.7012919136. The cubic root of 31536101 is about 315.9385829739.

Adding to 31536101 its reverse (10163513), we get a palindrome (41699614).

The spelling of 31536101 in words is "thirty-one million, five hundred thirty-six thousand, one hundred one".