31120012220010 has 32 divisors (see below), whose sum is σ = 85357747804032. Its totient is φ = 7113145650240.

The previous prime is 31120012219991. The next prime is 31120012220039. The reversal of 31120012220010 is 1002221002113.

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 15 ways as a sum of consecutive naturals, for example, 74095266981 + ... + 74095267400.

It is an arithmetic number, because the mean of its divisors is an integer number (2667429618876).

Almost surely, 2^{31120012220010} is an apocalyptic number.

31120012220010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31120012220010 is an abundant number, since it is smaller than the sum of its proper divisors (54237735584022).

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

31120012220010 is a wasteful number, since it uses less digits than its factorization.

31120012220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148190534398.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 31120012220010 its reverse (1002221002113), we get a palindrome (32122233222123).

The spelling of 31120012220010 in words is "thirty-one trillion, one hundred twenty billion, twelve million, two hundred twenty thousand, ten".