161807313 has 8 divisors (see below), whose sum is σ = 216245376. Its totient is φ = 107620400.

The previous prime is 161807311. The next prime is 161807341. The reversal of 161807313 is 313708161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161807313 - 2¹ = 161807311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161807311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61278 + ... + 63863.

It is an arithmetic number, because the mean of its divisors is an integer number (27030672).

Almost surely, 2^161807313 is an apocalyptic number.

It is an amenable number.

161807313 is a deficient number, since it is larger than the sum of its proper divisors (54438063).

161807313 is a wasteful number, since it uses less digits than its factorization.

161807313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125575.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 161807313 is about 12720.3503489487. The cubic root of 161807313 is about 544.9199590672.

The spelling of 161807313 in words is "one hundred sixty-one million, eight hundred seven thousand, three hundred thirteen".