31023120213222 has 16 divisors (see below), whose sum is σ = 62831635875840. Its totient is φ = 10210140829512.

The previous prime is 31023120213179. The next prime is 31023120213227. The reversal of 31023120213222 is 22231202132013.

It is a junction number, because it is equal to n+sod(n) for n = 31023120213192 and 31023120213201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023120213227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32724809878 + ... + 32724810825.

It is an arithmetic number, because the mean of its divisors is an integer number (3926977242240).

Almost surely, 2^{31023120213222} is an apocalyptic number.

31023120213222 is an abundant number, since it is smaller than the sum of its proper divisors (31808515662618).

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

31023120213222 is a wasteful number, since it uses less digits than its factorization.

31023120213222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65449620787.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31023120213222 its reverse (22231202132013), we get a palindrome (53254322345235).

The spelling of 31023120213222 in words is "thirty-one trillion, twenty-three billion, one hundred twenty million, two hundred thirteen thousand, two hundred twenty-two".