31120031100340 has 72 divisors (see below), whose sum is σ = 80875252483200. Its totient is φ = 9848976868224.

The previous prime is 31120031100269. The next prime is 31120031100341. The reversal of 31120031100340 is 4300113002113.

It is a super-2 number, since 2×31120031100340² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120031100341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 657627040 + ... + 657674359.

It is an arithmetic number, because the mean of its divisors is an integer number (1123267395600).

Almost surely, 2^{31120031100340} is an apocalyptic number.

It is an amenable number.

31120031100340 is an abundant number, since it is smaller than the sum of its proper divisors (49755221382860).

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

31120031100340 is a wasteful number, since it uses less digits than its factorization.

31120031100340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315301441 (or 1315301426 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31120031100340 its reverse (4300113002113), we get a palindrome (35420144102453).

The spelling of 31120031100340 in words is "thirty-one trillion, one hundred twenty billion, thirty-one million, one hundred thousand, three hundred forty".