202131157 has 2 divisors, whose sum is σ = 202131158.
Its totient is φ = 202131156.
The previous prime is 202131151. The next prime is 202131169. The reversal of 202131157 is 751131202.
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., 118243876 + 83887281 = 10874^2 + 9159^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-202131157 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (202131151) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101065578 + 101065579.
It is an arithmetic number, because the mean of its divisors is an integer number (101065579).
Almost surely, 2202131157 is an apocalyptic number.
It is an amenable number.
202131157 is a deficient number, since it is larger than the sum of its proper divisors (1).
202131157 is an equidigital number, since it uses as much as digits as its factorization.
202131157 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 420, while the sum is 22.
The square root of 202131157 is about 14217.2837419811.
The cubic root of 202131157 is about 586.8733933063.
Adding to 202131157 its reverse (751131202), we get a palindrome (953262359).
The spelling of 202131157 in words is "two hundred two million, one hundred thirty-one thousand, one hundred fifty-seven".