31123340223 has 8 divisors (see below), whose sum is σ = 43938833328. Its totient is φ = 19528370304.

The previous prime is 31123340207. The next prime is 31123340243. The reversal of 31123340223 is 32204332113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31123340223 - 2⁴ = 31123340207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31123340193 and 31123340202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123340243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305130736 + ... + 305130837.

It is an arithmetic number, because the mean of its divisors is an integer number (5492354166).

Almost surely, 2^31123340223 is an apocalyptic number.

31123340223 is a deficient number, since it is larger than the sum of its proper divisors (12815493105).

31123340223 is a wasteful number, since it uses less digits than its factorization.

31123340223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610261593.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31123340223 its reverse (32204332113), we get a palindrome (63327672336).

The spelling of 31123340223 in words is "thirty-one billion, one hundred twenty-three million, three hundred forty thousand, two hundred twenty-three".