31223555343 has 12 divisors (see below), whose sum is σ = 45840047448. Its totient is φ = 20474462160.

The previous prime is 31223555243. The next prime is 31223555357. The reversal of 31223555343 is 34355532213.

31223555343 is a `hidden beast` number, since 31 + 2 + 2 + 35 + 553 + 43 = 666.

It is not a de Polignac number, because 31223555343 - 2²⁰ = 31222506767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31223555298 and 31223555307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223555243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28436205 + ... + 28437302.

It is an arithmetic number, because the mean of its divisors is an integer number (3820003954).

Almost surely, 2^31223555343 is an apocalyptic number.

31223555343 is a deficient number, since it is larger than the sum of its proper divisors (14616492105).

31223555343 is a wasteful number, since it uses less digits than its factorization.

31223555343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56873574 (or 56873571 counting only the distinct ones).

The product of its digits is 162000, while the sum is 36.

The spelling of 31223555343 in words is "thirty-one billion, two hundred twenty-three million, five hundred fifty-five thousand, three hundred forty-three".