31214245121 has 8 divisors (see below), whose sum is σ = 31383420000. Its totient is φ = 31045271040.

The previous prime is 31214245109. The next prime is 31214245129. The reversal of 31214245121 is 12154241213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31214245121 - 2¹⁸ = 31213982977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31214245129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266945 + ... + 365633.

It is an arithmetic number, because the mean of its divisors is an integer number (3922927500).

Almost surely, 2^31214245121 is an apocalyptic number.

It is an amenable number.

31214245121 is a deficient number, since it is larger than the sum of its proper divisors (169174879).

31214245121 is a wasteful number, since it uses less digits than its factorization.

31214245121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100399.

The product of its digits is 1920, while the sum is 26.

Adding to 31214245121 its reverse (12154241213), we get a palindrome (43368486334).

The spelling of 31214245121 in words is "thirty-one billion, two hundred fourteen million, two hundred forty-five thousand, one hundred twenty-one".