31031021222230 has 32 divisors (see below), whose sum is σ = 57045100362624. Its totient is φ = 12148135787136.

The previous prime is 31031021222141. The next prime is 31031021222261. The reversal of 31031021222230 is 3222212013013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34073484 + ... + 34972336.

It is an arithmetic number, because the mean of its divisors is an integer number (1782659386332).

Almost surely, 2^{31031021222230} is an apocalyptic number.

31031021222230 is a deficient number, since it is larger than the sum of its proper divisors (26014079140394).

31031021222230 is a wasteful number, since it uses less digits than its factorization.

31031021222230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972360.

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

Adding to 31031021222230 its reverse (3222212013013), we get a palindrome (34253233235243).

The spelling of 31031021222230 in words is "thirty-one trillion, thirty-one billion, twenty-one million, two hundred twenty-two thousand, two hundred thirty".