31434120243 has 24 divisors (see below), whose sum is σ = 46492213248. Its totient is φ = 20456549232.

The previous prime is 31434120209. The next prime is 31434120257. The reversal of 31434120243 is 34202143413.

31434120243 is a `hidden beast` number, since 3 + 1 + 4 + 3 + 412 + 0 + 243 = 666.

It is not a de Polignac number, because 31434120243 - 2²⁵ = 31400565811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31434120293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64996 + ... + 259022.

It is an arithmetic number, because the mean of its divisors is an integer number (1937175552).

Almost surely, 2^31434120243 is an apocalyptic number.

31434120243 is a deficient number, since it is larger than the sum of its proper divisors (15058093005).

31434120243 is a wasteful number, since it uses less digits than its factorization.

31434120243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194463 (or 194460 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 31434120243 its reverse (34202143413), we get a palindrome (65636263656).

The spelling of 31434120243 in words is "thirty-one billion, four hundred thirty-four million, one hundred twenty thousand, two hundred forty-three".