31240242234 has 24 divisors (see below), whose sum is σ = 67861209780. Its totient is φ = 10386642048.

The previous prime is 31240242221. The next prime is 31240242239. The reversal of 31240242234 is 43224204213.

31240242234 is a `hidden beast` number, since 31 + 2 + 402 + 4 + 223 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31238795025 + 1447209 = 176745^2 + 1203^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31240242198 and 31240242207.

It is not an unprimeable number, because it can be changed into a prime (31240242239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2223807 + ... + 2237810.

Almost surely, 2^31240242234 is an apocalyptic number.

31240242234 is an abundant number, since it is smaller than the sum of its proper divisors (36620967546).

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

31240242234 is a wasteful number, since it uses less digits than its factorization.

31240242234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4462014 (or 4462011 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 31240242234 its reverse (43224204213), we get a palindrome (74464446447).

The spelling of 31240242234 in words is "thirty-one billion, two hundred forty million, two hundred forty-two thousand, two hundred thirty-four".