31120252141 has 16 divisors (see below), whose sum is σ = 34026632640. Its totient is φ = 28226839680.

The previous prime is 31120252117. The next prime is 31120252153. The reversal of 31120252141 is 14125202113.

It is a cyclic number.

It is not a de Polignac number, because 31120252141 - 2⁵ = 31120252109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120250141) 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 15 ways as a sum of consecutive naturals, for example, 15336715 + ... + 15338743.

It is an arithmetic number, because the mean of its divisors is an integer number (2126664540).

Almost surely, 2^31120252141 is an apocalyptic number.

It is an amenable number.

31120252141 is a deficient number, since it is larger than the sum of its proper divisors (2906380499).

31120252141 is a wasteful number, since it uses less digits than its factorization.

31120252141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 31120252141 its reverse (14125202113), we get a palindrome (45245454254).

The spelling of 31120252141 in words is "thirty-one billion, one hundred twenty million, two hundred fifty-two thousand, one hundred forty-one".