1020211311 has 20 divisors (see below), whose sum is σ = 1586912152. Its totient is φ = 582973776.

The previous prime is 1020211307. The next prime is 1020211319. The reversal of 1020211311 is 1131120201.

It is not a de Polignac number, because 1020211311 - 2² = 1020211307 is a prime.

It is a super-2 number, since 2×1020211311² = 2081662238184677442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020211319) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 63616 + ... + 78021.

Almost surely, 2^1020211311 is an apocalyptic number.

1020211311 is a deficient number, since it is larger than the sum of its proper divisors (566700841).

1020211311 is an frugal number, since it uses more digits than its factorization.

1020211311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141668 (or 141647 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1020211311 is about 31940.7468760516. The cubic root of 1020211311 is about 1006.6922179798.

Adding to 1020211311 its reverse (1131120201), we get a palindrome (2151331512).

The spelling of 1020211311 in words is "one billion, twenty million, two hundred eleven thousand, three hundred eleven".