2101131031 has 8 divisors (see below), whose sum is σ = 2261199024. Its totient is φ = 1945115520.

The previous prime is 2101131023. The next prime is 2101131049. The reversal of 2101131031 is 1301311012.

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

It is not a de Polignac number, because 2101131031 - 2³ = 2101131023 is a prime.

It is a super-2 number, since 2×2101131031² = 8829503218862245922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101131061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012045 + ... + 1014118.

It is an arithmetic number, because the mean of its divisors is an integer number (282649878).

Almost surely, 2^2101131031 is an apocalyptic number.

2101131031 is a deficient number, since it is larger than the sum of its proper divisors (160067993).

2101131031 is a wasteful number, since it uses less digits than its factorization.

2101131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026241.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 2101131031 is about 45838.0958483225. The cubic root of 2101131031 is about 1280.8090244774.

Adding to 2101131031 its reverse (1301311012), we get a palindrome (3402442043).

The spelling of 2101131031 in words is "two billion, one hundred one million, one hundred thirty-one thousand, thirty-one".