121431315360 has 96 divisors (see below), whose sum is σ = 383860693440. Its totient is φ = 32267225088.

The previous prime is 121431315353. The next prime is 121431315377. The reversal of 121431315360 is 63513134121.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311125 + ... + 582804.

It is an arithmetic number, because the mean of its divisors is an integer number (3998548890).

Almost surely, 2^121431315360 is an apocalyptic number.

121431315360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121431315360 is an abundant number, since it is smaller than the sum of its proper divisors (262429378080).

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

121431315360 is a wasteful number, since it uses less digits than its factorization.

121431315360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894230 (or 894222 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 121431315360 its reverse (63513134121), we get a palindrome (184944449481).

The spelling of 121431315360 in words is "one hundred twenty-one billion, four hundred thirty-one million, three hundred fifteen thousand, three hundred sixty".