2101986031 has 8 divisors (see below), whose sum is σ = 2264131584. Its totient is φ = 1945736760.

The previous prime is 2101986011. The next prime is 2101986037. The reversal of 2101986031 is 1306891012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2101986031 - 2¹⁹ = 2101461743 is a prime.

It is a super-2 number, since 2×2101986031² = 8836690549038265922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101985984 and 2101986002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101986037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1473331 + ... + 1474756.

It is an arithmetic number, because the mean of its divisors is an integer number (283016448).

Almost surely, 2^2101986031 is an apocalyptic number.

2101986031 is a deficient number, since it is larger than the sum of its proper divisors (162145553).

2101986031 is a wasteful number, since it uses less digits than its factorization.

2101986031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2948141.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 2101986031 is about 45847.4212033785. The cubic root of 2101986031 is about 1280.9827314308.

The spelling of 2101986031 in words is "two billion, one hundred one million, nine hundred eighty-six thousand, thirty-one".