31203032130 has 48 divisors (see below), whose sum is σ = 83014588800. Its totient is φ = 8127300384.

The previous prime is 31203032129. The next prime is 31203032167. The reversal of 31203032130 is 3123030213.

31203032130 is a `hidden beast` number, since 312 + 0 + 3 + 0 + 321 + 30 = 666.

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4027530 + ... + 4035269.

It is an arithmetic number, because the mean of its divisors is an integer number (1729470600).

Almost surely, 2^31203032130 is an apocalyptic number.

31203032130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31203032130 is an abundant number, since it is smaller than the sum of its proper divisors (51811556670).

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

31203032130 is a wasteful number, since it uses less digits than its factorization.

31203032130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8062855 (or 8062852 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31203032130 its reverse (3123030213), we get a palindrome (34326062343).

The spelling of 31203032130 in words is "thirty-one billion, two hundred three million, thirty-two thousand, one hundred thirty".