31110212130 has 128 divisors (see below), whose sum is σ = 77934182400. Its totient is φ = 7939288320.

The previous prime is 31110212123. The next prime is 31110212167. The reversal of 31110212130 is 3121201113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48083467 + ... + 48084113.

It is an arithmetic number, because the mean of its divisors is an integer number (608860800).

Almost surely, 2^31110212130 is an apocalyptic number.

31110212130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31110212130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38967091200).

31110212130 is an abundant number, since it is smaller than the sum of its proper divisors (46823970270).

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

31110212130 is a wasteful number, since it uses less digits than its factorization.

31110212130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31110212130 its reverse (3121201113), we get a palindrome (34231413243).

The spelling of 31110212130 in words is "thirty-one billion, one hundred ten million, two hundred twelve thousand, one hundred thirty".