331161243 has 8 divisors (see below), whose sum is σ = 504626688. Its totient is φ = 189234984.

The previous prime is 331161191. The next prime is 331161247. The reversal of 331161243 is 342161133.

It is a happy number.

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

It is not a de Polignac number, because 331161243 - 2¹³ = 331153051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331161247) 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, 7884771 + ... + 7884812.

It is an arithmetic number, because the mean of its divisors is an integer number (63078336).

Almost surely, 2^331161243 is an apocalyptic number.

331161243 is a deficient number, since it is larger than the sum of its proper divisors (173465445).

331161243 is a wasteful number, since it uses less digits than its factorization.

331161243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15769593.

The product of its digits is 1296, while the sum is 24.

The square root of 331161243 is about 18197.8362175287. The cubic root of 331161243 is about 691.8519478728.

The spelling of 331161243 in words is "three hundred thirty-one million, one hundred sixty-one thousand, two hundred forty-three".