2131010101 has 4 divisors (see below), whose sum is σ = 2324738304. Its totient is φ = 1937281900.

The previous prime is 2131010083. The next prime is 2131010159. The reversal of 2131010101 is 1010101312.

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 2131010101 - 2⁹ = 2131009589 is a prime.

It is a Duffinian number.

2131010101 is a modest number, since divided by 10101 gives 2131 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131010171) 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, 96864085 + ... + 96864106.

It is an arithmetic number, because the mean of its divisors is an integer number (581184576).

Almost surely, 2^2131010101 is an apocalyptic number.

It is an amenable number.

2131010101 is a deficient number, since it is larger than the sum of its proper divisors (193728203).

2131010101 is a wasteful number, since it uses less digits than its factorization.

2131010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193728202.

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

The square root of 2131010101 is about 46162.8649565860. The cubic root of 2131010101 is about 1286.8517063722.

Adding to 2131010101 its reverse (1010101312), we get a palindrome (3141111413).

The spelling of 2131010101 in words is "two billion, one hundred thirty-one million, ten thousand, one hundred one".