31112333201020 has 12 divisors (see below), whose sum is σ = 65335899722184. Its totient is φ = 12444933280400.

The previous prime is 31112333201011. The next prime is 31112333201029. The reversal of 31112333201020 is 2010233321113.

It is an interprime number because it is at equal distance from previous prime (31112333201011) and next prime (31112333201029).

It is a super-2 number, since 2×31112333201020² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31112333200982 and 31112333201000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112333201029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777808330006 + ... + 777808330045.

It is an arithmetic number, because the mean of its divisors is an integer number (5444658310182).

Almost surely, 2^{31112333201020} is an apocalyptic number.

It is an amenable number.

31112333201020 is an abundant number, since it is smaller than the sum of its proper divisors (34223566521164).

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

31112333201020 is a wasteful number, since it uses less digits than its factorization.

31112333201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555616660060 (or 1555616660058 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31112333201020 its reverse (2010233321113), we get a palindrome (33122566522133).

The spelling of 31112333201020 in words is "thirty-one trillion, one hundred twelve billion, three hundred thirty-three million, two hundred one thousand, twenty".