2331128061 has 6 divisors (see below), whose sum is σ = 3367184990. Its totient is φ = 1554085368.

The previous prime is 2331128027. The next prime is 2331128071. The reversal of 2331128061 is 1608211332.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2181824100 + 149303961 = 46710^2 + 12219^2 .

It is not a de Polignac number, because 2331128061 - 2⁷ = 2331127933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331128011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129507106 + ... + 129507123.

Almost surely, 2^2331128061 is an apocalyptic number.

It is an amenable number.

2331128061 is a deficient number, since it is larger than the sum of its proper divisors (1036056929).

2331128061 is a wasteful number, since it uses less digits than its factorization.

2331128061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259014235 (or 259014232 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2331128061 is about 48281.7570206388. The cubic root of 2331128061 is about 1325.9344183149.

Adding to 2331128061 its reverse (1608211332), we get a palindrome (3939339393).

The spelling of 2331128061 in words is "two billion, three hundred thirty-one million, one hundred twenty-eight thousand, sixty-one".