1020212311 has 4 divisors (see below), whose sum is σ = 1064569392. Its totient is φ = 975855232.

The previous prime is 1020212309. The next prime is 1020212327. The reversal of 1020212311 is 1132120201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020212311 - 2¹ = 1020212309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020212291 and 1020212300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020210311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22178506 + ... + 22178551.

It is an arithmetic number, because the mean of its divisors is an integer number (266142348).

Almost surely, 2^1020212311 is an apocalyptic number.

1020212311 is a deficient number, since it is larger than the sum of its proper divisors (44357081).

1020212311 is an equidigital number, since it uses as much as digits as its factorization.

1020212311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44357080.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1020212311 is about 31940.7625300336. The cubic root of 1020212311 is about 1006.6925468959.

Adding to 1020212311 its reverse (1132120201), we get a palindrome (2152332512).

The spelling of 1020212311 in words is "one billion, twenty million, two hundred twelve thousand, three hundred eleven".