31031220011222 has 8 divisors (see below), whose sum is σ = 46546865704296. Its totient is φ = 15515598109792.

The previous prime is 31031220011213. The next prime is 31031220011243. The reversal of 31031220011222 is 22211002213013.

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

It is a junction number, because it is equal to n+sod(n) for n = 31031220011194 and 31031220011203.

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, 2219843 + ... + 8184750.

It is an arithmetic number, because the mean of its divisors is an integer number (5818358213037).

Almost surely, 2^{31031220011222} is an apocalyptic number.

31031220011222 is a deficient number, since it is larger than the sum of its proper divisors (15515645693074).

31031220011222 is a wasteful number, since it uses less digits than its factorization.

31031220011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11895822.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31031220011222 its reverse (22211002213013), we get a palindrome (53242222224235).

The spelling of 31031220011222 in words is "thirty-one trillion, thirty-one billion, two hundred twenty million, eleven thousand, two hundred twenty-two".