2231378613328 has 20 divisors (see below), whose sum is σ = 4323357567540. Its totient is φ = 1115673434624.

The previous prime is 2231378613319. The next prime is 2231378613371. The reversal of 2231378613328 is 8233168731322.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 929242016784 + 1302136596544 = 963972^2 + 1141112^2 .

It is a super-3 number, since 3×2231378613328³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212118 + ... + 2123146.

It is an arithmetic number, because the mean of its divisors is an integer number (216167878377).

Almost surely, 2^{2231378613328} is an apocalyptic number.

It is an amenable number.

2231378613328 is a deficient number, since it is larger than the sum of its proper divisors (2091978954212).

2231378613328 is a wasteful number, since it uses less digits than its factorization.

2231378613328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984014 (or 1984008 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The spelling of 2231378613328 in words is "two trillion, two hundred thirty-one billion, three hundred seventy-eight million, six hundred thirteen thousand, three hundred twenty-eight".