1023313331 has 4 divisors (see below), whose sum is σ = 1024147200. Its totient is φ = 1022479464.

The previous prime is 1023313321. The next prime is 1023313349. The reversal of 1023313331 is 1333133201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1333133201 = 1847 ⋅721783.

It is a cyclic number.

It is not a de Polignac number, because 1023313331 - 2¹⁸ = 1023051187 is a prime.

It is a super-2 number, since 2×1023313331² = 2094340346804631122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023313321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415091 + ... + 417548.

It is an arithmetic number, because the mean of its divisors is an integer number (256036800).

Almost surely, 2^1023313331 is an apocalyptic number.

1023313331 is a deficient number, since it is larger than the sum of its proper divisors (833869).

1023313331 is an equidigital number, since it uses as much as digits as its factorization.

1023313331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833868.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1023313331 is about 31989.2689975873. The cubic root of 1023313331 is about 1007.7114903894.

Adding to 1023313331 its reverse (1333133201), we get a palindrome (2356446532).

The spelling of 1023313331 in words is "one billion, twenty-three million, three hundred thirteen thousand, three hundred thirty-one".