31234340043 has 16 divisors (see below), whose sum is σ = 47349216640. Its totient is φ = 20338639272.

The previous prime is 31234339979. The next prime is 31234340113. The reversal of 31234340043 is 34004343213.

31234340043 is a `hidden beast` number, since 312 + 3 + 4 + 340 + 0 + 4 + 3 = 666.

It is not a de Polignac number, because 31234340043 - 2⁶ = 31234339979 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 junction number, because it is equal to n+sod(n) for n = 31234339989 and 31234340016.

It is not an unprimeable number, because it can be changed into a prime (31234340243) 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, 13450321 + ... + 13452642.

It is an arithmetic number, because the mean of its divisors is an integer number (2959326040).

Almost surely, 2^31234340043 is an apocalyptic number.

31234340043 is a deficient number, since it is larger than the sum of its proper divisors (16114876597).

31234340043 is a wasteful number, since it uses less digits than its factorization.

31234340043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26903015 (or 26903009 counting only the distinct ones).

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

Adding to 31234340043 its reverse (34004343213), we get a palindrome (65238683256).

The spelling of 31234340043 in words is "thirty-one billion, two hundred thirty-four million, three hundred forty thousand, forty-three".