243052931 has 4 divisors (see below), whose sum is σ = 265148664. Its totient is φ = 220957200.

The previous prime is 243052907. The next prime is 243052991. The reversal of 243052931 is 139250342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243052931 is a prime.

It is a super-2 number, since 2×243052931² = 118149454535381522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243052894 and 243052903.

It is not an unprimeable number, because it can be changed into a prime (243052991) 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, 11047850 + ... + 11047871.

It is an arithmetic number, because the mean of its divisors is an integer number (66287166).

Almost surely, 2^243052931 is an apocalyptic number.

243052931 is a deficient number, since it is larger than the sum of its proper divisors (22095733).

243052931 is a wasteful number, since it uses less digits than its factorization.

243052931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22095732.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 243052931 is about 15590.1549382936. The cubic root of 243052931 is about 624.0704526455.

The spelling of 243052931 in words is "two hundred forty-three million, fifty-two thousand, nine hundred thirty-one".