31223311222 has 8 divisors (see below), whose sum is σ = 49589964936. Its totient is φ = 14693322912.

The previous prime is 31223311177. The next prime is 31223311243. The reversal of 31223311222 is 22211332213.

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

It is a super-2 number, since 2×31223311222² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31223311193 and 31223311202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459166308 + ... + 459166375.

It is an arithmetic number, because the mean of its divisors is an integer number (6198745617).

Almost surely, 2^31223311222 is an apocalyptic number.

31223311222 is a deficient number, since it is larger than the sum of its proper divisors (18366653714).

31223311222 is a wasteful number, since it uses less digits than its factorization.

31223311222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918332702.

The product of its digits is 864, while the sum is 22.

Adding to 31223311222 its reverse (22211332213), we get a palindrome (53434643435).

The spelling of 31223311222 in words is "thirty-one billion, two hundred twenty-three million, three hundred eleven thousand, two hundred twenty-two".