1023353381 has 4 divisors (see below), whose sum is σ = 1023492492. Its totient is φ = 1023214272.

The previous prime is 1023353371. The next prime is 1023353389. The reversal of 1023353381 is 1833533201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 679436356 + 343917025 = 26066^2 + 18545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023353381 - 2¹⁴ = 1023336997 is a prime.

It is a super-2 number, since 2×1023353381² = 2094504284808262322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023353389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57866 + ... + 73451.

It is an arithmetic number, because the mean of its divisors is an integer number (255873123).

Almost surely, 2^1023353381 is an apocalyptic number.

It is an amenable number.

1023353381 is a deficient number, since it is larger than the sum of its proper divisors (139111).

1023353381 is an equidigital number, since it uses as much as digits as its factorization.

1023353381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139110.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1023353381 is about 31989.8949826348. The cubic root of 1023353381 is about 1007.7246366785.

Adding to 1023353381 its reverse (1833533201), we get a palindrome (2856886582).

The spelling of 1023353381 in words is "one billion, twenty-three million, three hundred fifty-three thousand, three hundred eighty-one".