732023021 has 2 divisors, whose sum is σ = 732023022. Its totient is φ = 732023020.

The previous prime is 732022987. The next prime is 732023023. The reversal of 732023021 is 120320237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 645718921 + 86304100 = 25411^2 + 9290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-732023021 is a prime.

Together with 732023023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 732022984 and 732023002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (732023023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 366011510 + 366011511.

It is an arithmetic number, because the mean of its divisors is an integer number (366011511).

Almost surely, 2^732023021 is an apocalyptic number.

It is an amenable number.

732023021 is a deficient number, since it is larger than the sum of its proper divisors (1).

732023021 is an equidigital number, since it uses as much as digits as its factorization.

732023021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 732023021 is about 27055.9239539144. The cubic root of 732023021 is about 901.2423259151.

Adding to 732023021 its reverse (120320237), we get a palindrome (852343258).

The spelling of 732023021 in words is "seven hundred thirty-two million, twenty-three thousand, twenty-one".