31223102230 has 32 divisors (see below), whose sum is σ = 59196641760. Its totient is φ = 11824496640.

The previous prime is 31223102227. The next prime is 31223102233. The reversal of 31223102230 is 3220132213.

It is an interprime number because it is at equal distance from previous prime (31223102227) and next prime (31223102233).

It is a super-2 number, since 2×31223102230² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 31223102198 and 31223102207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223102233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257302 + ... + 358678.

It is an arithmetic number, because the mean of its divisors is an integer number (1849895055).

Almost surely, 2^31223102230 is an apocalyptic number.

31223102230 is a deficient number, since it is larger than the sum of its proper divisors (27973539530).

31223102230 is a wasteful number, since it uses less digits than its factorization.

31223102230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103024.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31223102230 its reverse (3220132213), we get a palindrome (34443234443).

The spelling of 31223102230 in words is "thirty-one billion, two hundred twenty-three million, one hundred two thousand, two hundred thirty".