1023013331 has 4 divisors (see below), whose sum is σ = 1040352600. Its totient is φ = 1005674064.

The previous prime is 1023013283. The next prime is 1023013349. The reversal of 1023013331 is 1333103201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1333103201 = 18451 ⋅72251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023013331 is a prime.

It is a super-2 number, since 2×1023013331² = 2093112550807431122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023013931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8669546 + ... + 8669663.

It is an arithmetic number, because the mean of its divisors is an integer number (260088150).

Almost surely, 2^1023013331 is an apocalyptic number.

1023013331 is a deficient number, since it is larger than the sum of its proper divisors (17339269).

1023013331 is an equidigital number, since it uses as much as digits as its factorization.

1023013331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17339268.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1023013331 is about 31984.5795814170. The cubic root of 1023013331 is about 1007.6130054042.

Adding to 1023013331 its reverse (1333103201), we get a palindrome (2356116532).

The spelling of 1023013331 in words is "one billion, twenty-three million, thirteen thousand, three hundred thirty-one".