31031202104 has 64 divisors (see below), whose sum is σ = 67148663040. Its totient is φ = 13168673280.

The previous prime is 31031202101. The next prime is 31031202259. The reversal of 31031202104 is 40120213013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31031202101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9686567 + ... + 9689769.

It is an arithmetic number, because the mean of its divisors is an integer number (1049197860).

Almost surely, 2^31031202104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31031202104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33574331520).

31031202104 is an abundant number, since it is smaller than the sum of its proper divisors (36117460936).

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

31031202104 is a wasteful number, since it uses less digits than its factorization.

31031202104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4860 (or 4856 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31031202104 its reverse (40120213013), we get a palindrome (71151415117).

The spelling of 31031202104 in words is "thirty-one billion, thirty-one million, two hundred two thousand, one hundred four".