31122003000 has 128 divisors (see below), whose sum is σ = 105928093440. Its totient is φ = 7544720000.

The previous prime is 31122002981. The next prime is 31122003013. The reversal of 31122003000 is 30022113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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, 438546 + ... + 504545.

It is an arithmetic number, because the mean of its divisors is an integer number (827563230).

Almost surely, 2^31122003000 is an apocalyptic number.

31122003000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31122003000 is an abundant number, since it is smaller than the sum of its proper divisors (74806090440).

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

31122003000 is a wasteful number, since it uses less digits than its factorization.

31122003000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943126 (or 943112 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 31122003000 its reverse (30022113), we get a palindrome (31152025113).

The spelling of 31122003000 in words is "thirty-one billion, one hundred twenty-two million, three thousand".