1011331205 has 16 divisors (see below), whose sum is σ = 1222750080. Its totient is φ = 802982208.

The previous prime is 1011331199. The next prime is 1011331283. The reversal of 1011331205 is 5021331101.

It is a cyclic number.

It is not a de Polignac number, because 1011331205 - 2²⁰ = 1010282629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 735899 + ... + 737271.

It is an arithmetic number, because the mean of its divisors is an integer number (76421880).

Almost surely, 2^1011331205 is an apocalyptic number.

It is an amenable number.

1011331205 is a deficient number, since it is larger than the sum of its proper divisors (211418875).

1011331205 is a wasteful number, since it uses less digits than its factorization.

1011331205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1011331205 is about 31801.4340085475. The cubic root of 1011331205 is about 1003.7628912229.

Adding to 1011331205 its reverse (5021331101), we get a palindrome (6032662306).

The spelling of 1011331205 in words is "one billion, eleven million, three hundred thirty-one thousand, two hundred five".