31112202223020 has 96 divisors (see below), whose sum is σ = 87815763173376. Its totient is φ = 8229791808000.

The previous prime is 31112202222989. The next prime is 31112202223033. The reversal of 31112202223020 is 2032220221113.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42699360 + ... + 43421880.

It is an arithmetic number, because the mean of its divisors is an integer number (914747533056).

Almost surely, 2^{31112202223020} is an apocalyptic number.

31112202223020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31112202223020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43907881586688).

31112202223020 is an abundant number, since it is smaller than the sum of its proper divisors (56703560950356).

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

31112202223020 is a wasteful number, since it uses less digits than its factorization.

31112202223020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728311 (or 728309 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31112202223020 its reverse (2032220221113), we get a palindrome (33144422444133).

The spelling of 31112202223020 in words is "thirty-one trillion, one hundred twelve billion, two hundred two million, two hundred twenty-three thousand, twenty".