31000044204 has 72 divisors (see below), whose sum is σ = 83041096320. Its totient is φ = 9717253632.

The previous prime is 31000044203. The next prime is 31000044241. The reversal of 31000044204 is 40244000013.

It is a super-2 number, since 2×31000044204² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31000044203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 721477 + ... + 763235.

It is an arithmetic number, because the mean of its divisors is an integer number (1153348560).

Almost surely, 2^31000044204 is an apocalyptic number.

31000044204 is a gapful number since it is divisible by the number (34) 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 31000044204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41520548160).

31000044204 is an abundant number, since it is smaller than the sum of its proper divisors (52041052116).

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

31000044204 is a wasteful number, since it uses less digits than its factorization.

31000044204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42999 (or 42994 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 31000044204 its reverse (40244000013), we get a palindrome (71244044217).

The spelling of 31000044204 in words is "thirty-one billion, forty-four thousand, two hundred four".