31103031203130 has 64 divisors (see below), whose sum is σ = 78589353623040. Its totient is φ = 7856280403776.

The previous prime is 31103031203071. The next prime is 31103031203249. The reversal of 31103031203130 is 3130213030113.

It is a junction number, because it is equal to n+sod(n) for n = 31103031203097 and 31103031203106.

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, 1230232 + ... + 7982451.

It is an arithmetic number, because the mean of its divisors is an integer number (1227958650360).

Almost surely, 2^{31103031203130} is an apocalyptic number.

31103031203130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31103031203130 is an abundant number, since it is smaller than the sum of its proper divisors (47486322419910).

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

31103031203130 is a wasteful number, since it uses less digits than its factorization.

31103031203130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9218635.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31103031203130 its reverse (3130213030113), we get a palindrome (34233244233243).

The spelling of 31103031203130 in words is "thirty-one trillion, one hundred three billion, thirty-one million, two hundred three thousand, one hundred thirty".