201161313 has 30 divisors (see below), whose sum is σ = 311325014. Its totient is φ = 129439296.

The previous prime is 201161299. The next prime is 201161351. The reversal of 201161313 is 313161102.

It can be written as a sum of positive squares in 3 ways, for example, as 61732449 + 139428864 = 7857^2 + 11808^2 .

It is not a de Polignac number, because 201161313 - 2¹⁴ = 201144929 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201161813) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 66645 + ... + 69597.

Almost surely, 2^201161313 is an apocalyptic number.

It is an amenable number.

201161313 is a deficient number, since it is larger than the sum of its proper divisors (110163701).

201161313 is an equidigital number, since it uses as much as digits as its factorization.

201161313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023 (or 2985 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 201161313 is about 14183.1348086380. The cubic root of 201161313 is about 585.9332638030.

The spelling of 201161313 in words is "two hundred one million, one hundred sixty-one thousand, three hundred thirteen".