1021231373 has 2 divisors, whose sum is σ = 1021231374. Its totient is φ = 1021231372.

The previous prime is 1021231319. The next prime is 1021231417. The reversal of 1021231373 is 3731321201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 987090724 + 34140649 = 31418^2 + 5843^2 .

It is an emirp because it is prime and its reverse (3731321201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021231373 - 2²⁶ = 954122509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021231273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510615686 + 510615687.

It is an arithmetic number, because the mean of its divisors is an integer number (510615687).

Almost surely, 2^1021231373 is an apocalyptic number.

It is an amenable number.

1021231373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021231373 is an equidigital number, since it uses as much as digits as its factorization.

1021231373 is an evil number, because the sum of its binary digits is even.

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

The square root of 1021231373 is about 31956.7109227467. The cubic root of 1021231373 is about 1007.0276211817.

Adding to 1021231373 its reverse (3731321201), we get a palindrome (4752552574).

The spelling of 1021231373 in words is "one billion, twenty-one million, two hundred thirty-one thousand, three hundred seventy-three".