23132021 has 8 divisors (see below), whose sum is σ = 25581504. Its totient is φ = 20740320.

The previous prime is 23131973. The next prime is 23132023. The reversal of 23132021 is 12023132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23132021 - 2¹⁰ = 23130997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23131987 and 23132005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23132023) 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, 13601 + ... + 15206.

It is an arithmetic number, because the mean of its divisors is an integer number (3197688).

Almost surely, 2^23132021 is an apocalyptic number.

It is an amenable number.

23132021 is a deficient number, since it is larger than the sum of its proper divisors (2449483).

23132021 is a wasteful number, since it uses less digits than its factorization.

23132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28891.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23132021 is about 4809.5759688355. The cubic root of 23132021 is about 284.9297908516.

Adding to 23132021 its reverse (12023132), we get a palindrome (35155153).

Subtracting from 23132021 its reverse (12023132), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 2313 and 2021, that added together give a palindrome (4334).

The spelling of 23132021 in words is "twenty-three million, one hundred thirty-two thousand, twenty-one".