161062231 has 8 divisors (see below), whose sum is σ = 176688000. Its totient is φ = 145600440.

The previous prime is 161062217. The next prime is 161062249. The reversal of 161062231 is 132260161.

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 161062231 - 2⁷ = 161062103 is a prime.

It is a super-2 number, since 2×161062231² = 51882084509394722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161062831) 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, 38931 + ... + 42868.

It is an arithmetic number, because the mean of its divisors is an integer number (22086000).

Almost surely, 2^161062231 is an apocalyptic number.

161062231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

161062231 is a deficient number, since it is larger than the sum of its proper divisors (15625769).

161062231 is a wasteful number, since it uses less digits than its factorization.

161062231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81989.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 161062231 is about 12691.0295484645. The cubic root of 161062231 is about 544.0822654839.

The spelling of 161062231 in words is "one hundred sixty-one million, sixty-two thousand, two hundred thirty-one".