2231155444 has 24 divisors (see below), whose sum is σ = 4503255680. Its totient is φ = 947435616.

The previous prime is 2231155441. The next prime is 2231155447. The reversal of 2231155444 is 4445511322.

It is an interprime number because it is at equal distance from previous prime (2231155441) and next prime (2231155447).

It is a super-3 number, since 3×2231155444³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231155441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362472 + ... + 368575.

Almost surely, 2^2231155444 is an apocalyptic number.

It is an amenable number.

2231155444 is an abundant number, since it is smaller than the sum of its proper divisors (2272100236).

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

2231155444 is a wasteful number, since it uses less digits than its factorization.

2231155444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731167 (or 731165 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 2231155444 is about 47235.1081717826. The cubic root of 2231155444 is about 1306.7021615317.

Adding to 2231155444 its reverse (4445511322), we get a palindrome (6676666766).

The spelling of 2231155444 in words is "two billion, two hundred thirty-one million, one hundred fifty-five thousand, four hundred forty-four".