1002231332381 has 2 divisors, whose sum is σ = 1002231332382. Its totient is φ = 1002231332380.

The previous prime is 1002231332303. The next prime is 1002231332407. The reversal of 1002231332381 is 1832331322001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 916069123225 + 86162209156 = 957115^2 + 293534^2 .

It is an emirp because it is prime and its reverse (1832331322001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002231332381 - 2³⁸ = 727353425437 is a prime.

It is a super-2 number, since 2×1002231332381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002231362381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501115666190 + 501115666191.

It is an arithmetic number, because the mean of its divisors is an integer number (501115666191).

Almost surely, 2^{1002231332381} is an apocalyptic number.

It is an amenable number.

1002231332381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002231332381 is an equidigital number, since it uses as much as digits as its factorization.

1002231332381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 1002231332381 its reverse (1832331322001), we get a palindrome (2834562654382).

The spelling of 1002231332381 in words is "one trillion, two billion, two hundred thirty-one million, three hundred thirty-two thousand, three hundred eighty-one".