232161261 has 4 divisors (see below), whose sum is σ = 309548352. Its totient is φ = 154774172.

The previous prime is 232161227. The next prime is 232161271. The reversal of 232161261 is 162161232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 232161261 - 2¹⁹ = 231636973 is a prime.

It is a super-2 number, since 2×232161261² = 107797702218220242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232161271) 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, 38693541 + ... + 38693546.

It is an arithmetic number, because the mean of its divisors is an integer number (77387088).

Almost surely, 2^232161261 is an apocalyptic number.

It is an amenable number.

232161261 is a deficient number, since it is larger than the sum of its proper divisors (77387091).

232161261 is an equidigital number, since it uses as much as digits as its factorization.

232161261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77387090.

The product of its digits is 864, while the sum is 24.

The square root of 232161261 is about 15236.8389438230. The cubic root of 232161261 is about 614.6057013828.

The spelling of 232161261 in words is "two hundred thirty-two million, one hundred sixty-one thousand, two hundred sixty-one".