31023330112 has 56 divisors (see below), whose sum is σ = 64930629600. Its totient is φ = 14666098176.

The previous prime is 31023330089. The next prime is 31023330119. The reversal of 31023330112 is 21103332013.

It is a super-2 number, since 2×31023330112² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 31023330112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023330119) 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, 593883 + ... + 644005.

Almost surely, 2^31023330112 is an apocalyptic number.

31023330112 is a gapful number since it is divisible by the number (32) 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 31023330112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32465314800).

31023330112 is an abundant number, since it is smaller than the sum of its proper divisors (33907299488).

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

31023330112 is a wasteful number, since it uses less digits than its factorization.

31023330112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50663 (or 50653 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31023330112 its reverse (21103332013), we get a palindrome (52126662125).

The spelling of 31023330112 in words is "thirty-one billion, twenty-three million, three hundred thirty thousand, one hundred twelve".