31234340423 has 32 divisors (see below), whose sum is σ = 38315676672. Its totient is φ = 25054444800.

The previous prime is 31234340393. The next prime is 31234340437. The reversal of 31234340423 is 32404343213.

It is not a de Polignac number, because 31234340423 - 2¹⁶ = 31234274887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31234340443) 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 31 ways as a sum of consecutive naturals, for example, 8289686 + ... + 8293452.

It is an arithmetic number, because the mean of its divisors is an integer number (1197364896).

Almost surely, 2^31234340423 is an apocalyptic number.

31234340423 is a deficient number, since it is larger than the sum of its proper divisors (7081336249).

31234340423 is a wasteful number, since it uses less digits than its factorization.

31234340423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6335.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 31234340423 its reverse (32404343213), we get a palindrome (63638683636).

The spelling of 31234340423 in words is "thirty-one billion, two hundred thirty-four million, three hundred forty thousand, four hundred twenty-three".