243131034 has 16 divisors (see below), whose sum is σ = 495437472. Its totient is φ = 79514448.

The previous prime is 243131029. The next prime is 243131039. The reversal of 243131034 is 430131342.

It is an interprime number because it is at equal distance from previous prime (243131029) and next prime (243131039).

It is a super-2 number, since 2×243131034² = 118225399387818312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243131034.

It is not an unprimeable number, because it can be changed into a prime (243131039) 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, 381964 + ... + 382599.

It is an arithmetic number, because the mean of its divisors is an integer number (30964842).

Almost surely, 2^243131034 is an apocalyptic number.

243131034 is an abundant number, since it is smaller than the sum of its proper divisors (252306438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243131034 is a wasteful number, since it uses less digits than its factorization.

243131034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764621.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 243131034 is about 15592.6596191926. The cubic root of 243131034 is about 624.1372920706.

Adding to 243131034 its reverse (430131342), we get a palindrome (673262376).

The spelling of 243131034 in words is "two hundred forty-three million, one hundred thirty-one thousand, thirty-four".