23144142021 has 144 divisors (see below), whose sum is σ = 42956250624. Its totient is φ = 10977120000.

The previous prime is 23144142011. The next prime is 23144142031. The reversal of 23144142021 is 12024144132.

It is an interprime number because it is at equal distance from previous prime (23144142011) and next prime (23144142031).

It is not a de Polignac number, because 23144142021 - 2²⁶ = 23077033157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23144141982 and 23144142000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144142011) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 23353836 + ... + 23354826.

It is an arithmetic number, because the mean of its divisors is an integer number (298307296).

Almost surely, 2^23144142021 is an apocalyptic number.

23144142021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23144142021 is a deficient number, since it is larger than the sum of its proper divisors (19812108603).

23144142021 is a wasteful number, since it uses less digits than its factorization.

23144142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 23144142021 its reverse (12024144132), we get a palindrome (35168286153).

The spelling of 23144142021 in words is "twenty-three billion, one hundred forty-four million, one hundred forty-two thousand, twenty-one".