31120111012002 has 64 divisors (see below), whose sum is σ = 63985297144320. Its totient is φ = 10086951772800.

The previous prime is 31120111011991. The next prime is 31120111012007. The reversal of 31120111012002 is 20021011102113.

It is a super-2 number, since 2×31120111012002² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31120111012007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10897102 + ... + 13453142.

It is an arithmetic number, because the mean of its divisors is an integer number (999770267880).

Almost surely, 2^{31120111012002} is an apocalyptic number.

31120111012002 is an abundant number, since it is smaller than the sum of its proper divisors (32865186132318).

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

31120111012002 is a wasteful number, since it uses less digits than its factorization.

31120111012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556479.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 31120111012002 its reverse (20021011102113), we get a palindrome (51141122114115).

The spelling of 31120111012002 in words is "thirty-one trillion, one hundred twenty billion, one hundred eleven million, twelve thousand, two".