1020312101 has 4 divisors (see below), whose sum is σ = 1045197804. Its totient is φ = 995426400.

The previous prime is 1020312091. The next prime is 1020312149. The reversal of 1020312101 is 1012130201.

1020312101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1012130201 = 191 ⋅5299111.

It can be written as a sum of positive squares in 2 ways, for example, as 496131076 + 524181025 = 22274^2 + 22895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020312101 - 2¹⁸ = 1020049957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020312151) 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, 12442790 + ... + 12442871.

It is an arithmetic number, because the mean of its divisors is an integer number (261299451).

Almost surely, 2^1020312101 is an apocalyptic number.

It is an amenable number.

1020312101 is a deficient number, since it is larger than the sum of its proper divisors (24885703).

1020312101 is an equidigital number, since it uses as much as digits as its factorization.

1020312101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24885702.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1020312101 is about 31942.3246023204. The cubic root of 1020312101 is about 1006.7253683564.

Adding to 1020312101 its reverse (1012130201), we get a palindrome (2032442302).

The spelling of 1020312101 in words is "one billion, twenty million, three hundred twelve thousand, one hundred one".