31240543223 has 16 divisors (see below), whose sum is σ = 34365534720. Its totient is φ = 28292918976.

The previous prime is 31240543193. The next prime is 31240543241. The reversal of 31240543223 is 32234504213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31240543223 - 2²⁸ = 30972107767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31240545223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368390 + ... + 445187.

It is an arithmetic number, because the mean of its divisors is an integer number (2147845920).

Almost surely, 2^31240543223 is an apocalyptic number.

31240543223 is a deficient number, since it is larger than the sum of its proper divisors (3124991497).

31240543223 is a wasteful number, since it uses less digits than its factorization.

31240543223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813686.

The product of its (nonzero) digits is 17280, while the sum is 29.

The spelling of 31240543223 in words is "thirty-one billion, two hundred forty million, five hundred forty-three thousand, two hundred twenty-three".