Search a number
BaseRepresentation
bin11000000110001…
…00011011010101
3112002100022211011
430003010123111
5403221144112
632020212221
75003041444
oct1403043325
9462308734
10202131157
11a4109148
125783a071
1332b52347
141cbb8d5b
1512b2aaa7
hexc0c46d5

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".