2143154332 has 24 divisors (see below), whose sum is σ = 4112262000. Its totient is φ = 969212160.

The previous prime is 2143154323. The next prime is 2143154333. The reversal of 2143154332 is 2334513412.

It is a happy number.

It is a super-2 number, since 2×2143154332² = 9186220981540732448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2143154332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143154333) 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, 114957 + ... + 132292.

It is an arithmetic number, because the mean of its divisors is an integer number (171344250).

Almost surely, 2^2143154332 is an apocalyptic number.

2143154332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2143154332 is a deficient number, since it is larger than the sum of its proper divisors (1969107668).

2143154332 is a wasteful number, since it uses less digits than its factorization.

2143154332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247461 (or 247459 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 2143154332 is about 46294.2148869597. The cubic root of 2143154332 is about 1289.2915870842.

Adding to 2143154332 its reverse (2334513412), we get a palindrome (4477667744).

The spelling of 2143154332 in words is "two billion, one hundred forty-three million, one hundred fifty-four thousand, three hundred thirty-two".