161313151 has 2 divisors, whose sum is σ = 161313152. Its totient is φ = 161313150.

The previous prime is 161313143. The next prime is 161313161. The reversal of 161313151 is 151313161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161313151 - 2³ = 161313143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161313101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80656575 + 80656576.

It is an arithmetic number, because the mean of its divisors is an integer number (80656576).

Almost surely, 2^161313151 is an apocalyptic number.

161313151 is a deficient number, since it is larger than the sum of its proper divisors (1).

161313151 is an equidigital number, since it uses as much as digits as its factorization.

161313151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 22.

The square root of 161313151 is about 12700.9114239884. The cubic root of 161313151 is about 544.3646621011.

The spelling of 161313151 in words is "one hundred sixty-one million, three hundred thirteen thousand, one hundred fifty-one".