1023213013 has 4 divisors (see below), whose sum is σ = 1023311968. Its totient is φ = 1023114060.

The previous prime is 1023212999. The next prime is 1023213047. The reversal of 1023213013 is 3103123201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3103123201 = 73 ⋅42508537.

It is a cyclic number.

It is not a de Polignac number, because 1023213013 - 2⁹ = 1023212501 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 (1023213083) 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, 31881 + ... + 55342.

It is an arithmetic number, because the mean of its divisors is an integer number (255827992).

Almost surely, 2^1023213013 is an apocalyptic number.

It is an amenable number.

1023213013 is a deficient number, since it is larger than the sum of its proper divisors (98955).

1023213013 is an equidigital number, since it uses as much as digits as its factorization.

1023213013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98954.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1023213013 is about 31987.7009645895. The cubic root of 1023213013 is about 1007.6785598092.

Adding to 1023213013 its reverse (3103123201), we get a palindrome (4126336214).

The spelling of 1023213013 in words is "one billion, twenty-three million, two hundred thirteen thousand, thirteen".