31203422343 has 16 divisors (see below), whose sum is σ = 47476680160. Its totient is φ = 20240057088.

The previous prime is 31203422311. The next prime is 31203422347. The reversal of 31203422343 is 34322430213.

31203422343 is a `hidden beast` number, since 3 + 1 + 203 + 422 + 34 + 3 = 666.

It is not a de Polignac number, because 31203422343 - 2⁵ = 31203422311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31203422347) 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 15 ways as a sum of consecutive naturals, for example, 15616330 + ... + 15618327.

It is an arithmetic number, because the mean of its divisors is an integer number (2967292510).

Almost surely, 2^31203422343 is an apocalyptic number.

31203422343 is a deficient number, since it is larger than the sum of its proper divisors (16273257817).

31203422343 is a wasteful number, since it uses less digits than its factorization.

31203422343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31234703 (or 31234697 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 31203422343 its reverse (34322430213), we get a palindrome (65525852556).

The spelling of 31203422343 in words is "thirty-one billion, two hundred three million, four hundred twenty-two thousand, three hundred forty-three".