181201023 has 8 divisors (see below), whose sum is σ = 268446000. Its totient is φ = 120800664.

The previous prime is 181201003. The next prime is 181201067. The reversal of 181201023 is 320102181.

It is not a de Polignac number, because 181201023 - 2⁵ = 181200991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 181200987 and 181201005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181201003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3355548 + ... + 3355601.

It is an arithmetic number, because the mean of its divisors is an integer number (33555750).

Almost surely, 2^181201023 is an apocalyptic number.

181201023 is a deficient number, since it is larger than the sum of its proper divisors (87244977).

181201023 is an equidigital number, since it uses as much as digits as its factorization.

181201023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6711158 (or 6711152 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 181201023 is about 13461.0929348252. The cubic root of 181201023 is about 565.8746189747.

The spelling of 181201023 in words is "one hundred eighty-one million, two hundred one thousand, twenty-three".