202131953 has 2 divisors, whose sum is σ = 202131954. Its totient is φ = 202131952.

The previous prime is 202131947. The next prime is 202131971. The reversal of 202131953 is 359131202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186513649 + 15618304 = 13657^2 + 3952^2 .

It is a cyclic number.

It is not a de Polignac number, because 202131953 - 2¹² = 202127857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (202130953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101065976 + 101065977.

It is an arithmetic number, because the mean of its divisors is an integer number (101065977).

Almost surely, 2^202131953 is an apocalyptic number.

It is an amenable number.

202131953 is a deficient number, since it is larger than the sum of its proper divisors (1).

202131953 is an equidigital number, since it uses as much as digits as its factorization.

202131953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 202131953 is about 14217.3117360491. The cubic root of 202131953 is about 586.8741636817.

The spelling of 202131953 in words is "two hundred two million, one hundred thirty-one thousand, nine hundred fifty-three".