1023532311209 has 8 divisors (see below), whose sum is σ = 1034173862568. Its totient is φ = 1012892590080.

The previous prime is 1023532311161. The next prime is 1023532311211. The reversal of 1023532311209 is 9021132353201.

It can be written as a sum of positive squares in 4 ways, for example, as 369715984 + 1023162595225 = 19228^2 + 1011515^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023532311209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1023532311239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681389 + ... + 1584725.

It is an arithmetic number, because the mean of its divisors is an integer number (129271732821).

Almost surely, 2^{1023532311209} is an apocalyptic number.

It is an amenable number.

1023532311209 is a deficient number, since it is larger than the sum of its proper divisors (10641551359).

1023532311209 is an equidigital number, since it uses as much as digits as its factorization.

1023532311209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915115.

The product of its (nonzero) digits is 9720, while the sum is 32.

The spelling of 1023532311209 in words is "one trillion, twenty-three billion, five hundred thirty-two million, three hundred eleven thousand, two hundred nine".