231121440302214 has 128 divisors (see below), whose sum is σ = 591086957174784. Its totient is φ = 58495138848000.

The previous prime is 231121440302189. The next prime is 231121440302237. The reversal of 231121440302214 is 412203044121132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7839439 + ... + 22884485.

It is an arithmetic number, because the mean of its divisors is an integer number (4617866852928).

Almost surely, 2^{231121440302214} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231121440302214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295543478587392).

231121440302214 is an abundant number, since it is smaller than the sum of its proper divisors (359965516872570).

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

231121440302214 is a wasteful number, since it uses less digits than its factorization.

231121440302214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15045922.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 231121440302214 its reverse (412203044121132), we get a palindrome (643324484423346).

The spelling of 231121440302214 in words is "two hundred thirty-one trillion, one hundred twenty-one billion, four hundred forty million, three hundred two thousand, two hundred fourteen".