1020311101 has 4 divisors (see below), whose sum is σ = 1020422304. Its totient is φ = 1020199900.

The previous prime is 1020311093. The next prime is 1020311107. The reversal of 1020311101 is 1011130201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1020311101 - 2³ = 1020311093 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 (1020311107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40465 + ... + 60646.

It is an arithmetic number, because the mean of its divisors is an integer number (255105576).

Almost surely, 2^1020311101 is an apocalyptic number.

It is an amenable number.

1020311101 is a deficient number, since it is larger than the sum of its proper divisors (111203).

1020311101 is a wasteful number, since it uses less digits than its factorization.

1020311101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111202.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1020311101 is about 31942.3089491039. The cubic root of 1020311101 is about 1006.7250394617.

Adding to 1020311101 its reverse (1011130201), we get a palindrome (2031441302).

Subtracting from 1020311101 its reverse (1011130201), we obtain a square (9180900 = 3030²).

The spelling of 1020311101 in words is "one billion, twenty million, three hundred eleven thousand, one hundred one".