31332000222 has 24 divisors (see below), whose sum is σ = 67902587064. Its totient is φ = 10441448304.

The previous prime is 31332000211. The next prime is 31332000251. The reversal of 31332000222 is 22200023313.

It is a happy number.

It is a super-2 number, since 2×31332000222² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31332000195 and 31332000204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136188 + ... + 284975.

It is an arithmetic number, because the mean of its divisors is an integer number (2829274461).

Almost surely, 2^31332000222 is an apocalyptic number.

31332000222 is an abundant number, since it is smaller than the sum of its proper divisors (36570586842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31332000222 is a wasteful number, since it uses less digits than its factorization.

31332000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425304 (or 425301 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 31332000222 its reverse (22200023313), we get a palindrome (53532023535).

The spelling of 31332000222 in words is "thirty-one billion, three hundred thirty-two million, two hundred twenty-two", and thus it is an aban number.