2123015354 has 24 divisors (see below), whose sum is σ = 3331041948. Its totient is φ = 1014675200.

The previous prime is 2123015351. The next prime is 2123015449. The reversal of 2123015354 is 4535103212.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1720009729 + 403005625 = 41473^2 + 20075^2 .

It is not an unprimeable number, because it can be changed into a prime (2123015351) 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 11 ways as a sum of consecutive naturals, for example, 163634 + ... + 176130.

Almost surely, 2^2123015354 is an apocalyptic number.

2123015354 is a deficient number, since it is larger than the sum of its proper divisors (1208026594).

2123015354 is a wasteful number, since it uses less digits than its factorization.

2123015354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12658 (or 12629 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2123015354 is about 46076.1907496703. The cubic root of 2123015354 is about 1285.2404288016.

Adding to 2123015354 its reverse (4535103212), we get a palindrome (6658118566).

The spelling of 2123015354 in words is "two billion, one hundred twenty-three million, fifteen thousand, three hundred fifty-four".