1023331213 has 4 divisors (see below), whose sum is σ = 1023757020. Its totient is φ = 1022905408.

The previous prime is 1023331171. The next prime is 1023331217. The reversal of 1023331213 is 3121333201.

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 933119209 + 90212004 = 30547^2 + 9498^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023331213 - 2⁹ = 1023330701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023331217) 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, 209278 + ... + 214111.

It is an arithmetic number, because the mean of its divisors is an integer number (255939255).

Almost surely, 2^1023331213 is an apocalyptic number.

It is an amenable number.

1023331213 is a deficient number, since it is larger than the sum of its proper divisors (425807).

1023331213 is an equidigital number, since it uses as much as digits as its factorization.

1023331213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425806.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1023331213 is about 31989.5484963449. The cubic root of 1023331213 is about 1007.7173601431.

Adding to 1023331213 its reverse (3121333201), we get a palindrome (4144664414).

The spelling of 1023331213 in words is "one billion, twenty-three million, three hundred thirty-one thousand, two hundred thirteen".