31123033223 has 8 divisors (see below), whose sum is σ = 31211722560. Its totient is φ = 31034465280.

The previous prime is 31123033181. The next prime is 31123033229. The reversal of 31123033223 is 32233032113.

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

It is a cyclic number.

It is not a de Polignac number, because 31123033223 - 2¹⁴ = 31123016839 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 (31123033229) 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, 496043 + ... + 555251.

It is an arithmetic number, because the mean of its divisors is an integer number (3901465320).

Almost surely, 2^31123033223 is an apocalyptic number.

31123033223 is a deficient number, since it is larger than the sum of its proper divisors (88689337).

31123033223 is an equidigital number, since it uses as much as digits as its factorization.

31123033223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60697.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31123033223 its reverse (32233032113), we get a palindrome (63356065336).

The spelling of 31123033223 in words is "thirty-one billion, one hundred twenty-three million, thirty-three thousand, two hundred twenty-three".