312223221032 has 32 divisors (see below), whose sum is σ = 599224176000. Its totient is φ = 152445106944.

The previous prime is 312223221029. The next prime is 312223221041. The reversal of 312223221032 is 230122322213.

It is a junction number, because it is equal to n+sod(n) for n = 312223220989 and 312223221007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770657 + ... + 1103792.

It is an arithmetic number, because the mean of its divisors is an integer number (18725755500).

Almost surely, 2^312223221032 is an apocalyptic number.

It is an amenable number.

312223221032 is a deficient number, since it is larger than the sum of its proper divisors (287000954968).

312223221032 is a wasteful number, since it uses less digits than its factorization.

312223221032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874945 (or 1874941 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 312223221032 its reverse (230122322213), we get a palindrome (542345543245).

The spelling of 312223221032 in words is "three hundred twelve billion, two hundred twenty-three million, two hundred twenty-one thousand, thirty-two".