31220022230 has 16 divisors (see below), whose sum is σ = 56201345424. Its totient is φ = 12486829920.

The previous prime is 31220022191. The next prime is 31220022257. The reversal of 31220022230 is 3222002213.

It is a junction number, because it is equal to n+sod(n) for n = 31220022199 and 31220022208.

It is a congruent number.

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, 31841 + ... + 251900.

It is an arithmetic number, because the mean of its divisors is an integer number (3512584089).

Almost surely, 2^31220022230 is an apocalyptic number.

31220022230 is a deficient number, since it is larger than the sum of its proper divisors (24981323194).

31220022230 is a wasteful number, since it uses less digits than its factorization.

31220022230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294751.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 31220022230 its reverse (3222002213), we get a palindrome (34442024443).

The spelling of 31220022230 in words is "thirty-one billion, two hundred twenty million, twenty-two thousand, two hundred thirty".