1023401216 has 36 divisors (see below), whose sum is σ = 2063914692. Its totient is φ = 506413056.

The previous prime is 1023401191. The next prime is 1023401231. The reversal of 1023401216 is 6121043201.

It can be written as a sum of positive squares in 2 ways, for example, as 847042816 + 176358400 = 29104^2 + 13280^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4226 + ... + 45438.

Almost surely, 2^1023401216 is an apocalyptic number.

1023401216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023401216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031957346).

1023401216 is an abundant number, since it is smaller than the sum of its proper divisors (1040513476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023401216 is an frugal number, since it uses more digits than its factorization.

1023401216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41326 (or 41312 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1023401216 is about 31990.6426318697. The cubic root of 1023401216 is about 1007.7403379204.

Adding to 1023401216 its reverse (6121043201), we get a palindrome (7144444417).

The spelling of 1023401216 in words is "one billion, twenty-three million, four hundred one thousand, two hundred sixteen".