31102303223 has 4 divisors (see below), whose sum is σ = 31182258120. Its totient is φ = 31022348328.

The previous prime is 31102303189. The next prime is 31102303241. The reversal of 31102303223 is 32230320113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32230320113 = 89021 ⋅362053.

It is a cyclic number.

It is not a de Polignac number, because 31102303223 - 2¹⁰ = 31102302199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31102303195 and 31102303204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102303273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39976865 + ... + 39977642.

It is an arithmetic number, because the mean of its divisors is an integer number (7795564530).

Almost surely, 2^31102303223 is an apocalyptic number.

31102303223 is a deficient number, since it is larger than the sum of its proper divisors (79954897).

31102303223 is an equidigital number, since it uses as much as digits as its factorization.

31102303223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79954896.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31102303223 its reverse (32230320113), we get a palindrome (63332623336).

The spelling of 31102303223 in words is "thirty-one billion, one hundred two million, three hundred three thousand, two hundred twenty-three".