1023216730 has 8 divisors (see below), whose sum is σ = 1841790132. Its totient is φ = 409286688.

The previous prime is 1023216703. The next prime is 1023216731. The reversal of 1023216730 is 376123201.

1023216730 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1013085241 + 10131489 = 31829^2 + 3183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1023216695 and 1023216704.

It is not an unprimeable number, because it can be changed into a prime (1023216731) 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, 51160827 + ... + 51160846.

Almost surely, 2^1023216730 is an apocalyptic number.

1023216730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1023216730 is a deficient number, since it is larger than the sum of its proper divisors (818573402).

1023216730 is a wasteful number, since it uses less digits than its factorization.

1023216730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102321680.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 1023216730 is about 31987.7590649923. The cubic root of 1023216730 is about 1007.6797799972.

Adding to 1023216730 its reverse (376123201), we get a palindrome (1399339931).

It can be divided in two parts, 10232 and 16730, that added together give a palindrome (26962).

The spelling of 1023216730 in words is "one billion, twenty-three million, two hundred sixteen thousand, seven hundred thirty".