161312054 has 8 divisors (see below), whose sum is σ = 242560920. Its totient is φ = 80458416.

The previous prime is 161312051. The next prime is 161312057. The reversal of 161312054 is 450213161.

It is an interprime number because it is at equal distance from previous prime (161312051) and next prime (161312057).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161312051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97784 + ... + 99419.

It is an arithmetic number, because the mean of its divisors is an integer number (30320115).

Almost surely, 2^161312054 is an apocalyptic number.

161312054 is a deficient number, since it is larger than the sum of its proper divisors (81248866).

161312054 is a wasteful number, since it uses less digits than its factorization.

161312054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197614.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 161312054 is about 12700.8682380379. The cubic root of 161312054 is about 544.3634281257.

The spelling of 161312054 in words is "one hundred sixty-one million, three hundred twelve thousand, fifty-four".