1012205311 has 8 divisors (see below), whose sum is σ = 1090342400. Its totient is φ = 934107552.

The previous prime is 1012205303. The next prime is 1012205353. The reversal of 1012205311 is 1135022101.

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

It is a cyclic number.

It is not a de Polignac number, because 1012205311 - 2³ = 1012205303 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 (1012205611) 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, 64465 + ... + 78613.

It is an arithmetic number, because the mean of its divisors is an integer number (136292800).

Almost surely, 2^1012205311 is an apocalyptic number.

1012205311 is a deficient number, since it is larger than the sum of its proper divisors (78137089).

1012205311 is a wasteful number, since it uses less digits than its factorization.

1012205311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19665.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1012205311 is about 31815.1742255170. The cubic root of 1012205311 is about 1004.0519961511.

Adding to 1012205311 its reverse (1135022101), we get a palindrome (2147227412).

The spelling of 1012205311 in words is "one billion, twelve million, two hundred five thousand, three hundred eleven".