161134231 has 8 divisors (see below), whose sum is σ = 170046000. Its totient is φ = 152265600.

The previous prime is 161134229. The next prime is 161134241. The reversal of 161134231 is 132431161.

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 161134231 - 2¹ = 161134229 is a prime.

It is a super-2 number, since 2×161134231² = 51928480799922722, 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 (161134241) 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, 2956 + ... + 18193.

It is an arithmetic number, because the mean of its divisors is an integer number (21255750).

Almost surely, 2^161134231 is an apocalyptic number.

161134231 is a deficient number, since it is larger than the sum of its proper divisors (8911769).

161134231 is a wasteful number, since it uses less digits than its factorization.

161134231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21569.

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

The square root of 161134231 is about 12693.8658808103. The cubic root of 161134231 is about 544.1633274994.

Adding to 161134231 its reverse (132431161), we get a palindrome (293565392).

The spelling of 161134231 in words is "one hundred sixty-one million, one hundred thirty-four thousand, two hundred thirty-one".