2143231155 has 48 divisors (see below), whose sum is σ = 4093785696. Its totient is φ = 1030579200.

The previous prime is 2143231127. The next prime is 2143231177. The reversal of 2143231155 is 5511323412.

It is not a de Polignac number, because 2143231155 - 2¹² = 2143227059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17446 + ... + 67755.

It is an arithmetic number, because the mean of its divisors is an integer number (85287202).

Almost surely, 2^2143231155 is an apocalyptic number.

2143231155 is a deficient number, since it is larger than the sum of its proper divisors (1950554541).

2143231155 is a wasteful number, since it uses less digits than its factorization.

2143231155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85268 (or 85265 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2143231155 is about 46295.0446052275. The cubic root of 2143231155 is about 1289.3069921132.

Adding to 2143231155 its reverse (5511323412), we get a palindrome (7654554567).

The spelling of 2143231155 in words is "two billion, one hundred forty-three million, two hundred thirty-one thousand, one hundred fifty-five".