7233131021 has 2 divisors, whose sum is σ = 7233131022. Its totient is φ = 7233131020.

The previous prime is 7233130979. The next prime is 7233131023. The reversal of 7233131021 is 1201313327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6176230921 + 1056900100 = 78589^2 + 32510^2 .

It is an emirp because it is prime and its reverse (1201313327) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7233131021 is a prime.

Together with 7233131023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7233131023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3616565510 + 3616565511.

It is an arithmetic number, because the mean of its divisors is an integer number (3616565511).

Almost surely, 2^7233131021 is an apocalyptic number.

It is an amenable number.

7233131021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7233131021 is an equidigital number, since it uses as much as digits as its factorization.

7233131021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 7233131021 is about 85047.8160860113. The cubic root of 7233131021 is about 1933.9360571808.

Adding to 7233131021 its reverse (1201313327), we get a palindrome (8434444348).

The spelling of 7233131021 in words is "seven billion, two hundred thirty-three million, one hundred thirty-one thousand, twenty-one".