31120144100 has 36 divisors (see below), whose sum is σ = 67538385600. Its totient is φ = 12446643360.

The previous prime is 31120144073. The next prime is 31120144141. The reversal of 31120144100 is 144102113.

It is a happy number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1642481 + ... + 1661319.

Almost surely, 2^31120144100 is an apocalyptic number.

It is an amenable number.

31120144100 is an abundant number, since it is smaller than the sum of its proper divisors (36418241500).

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

31120144100 is a wasteful number, since it uses less digits than its factorization.

31120144100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35372 (or 35365 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 31120144100 its reverse (144102113), we get a palindrome (31264246213).

The spelling of 31120144100 in words is "thirty-one billion, one hundred twenty million, one hundred forty-four thousand, one hundred".