2101311331 has 8 divisors (see below), whose sum is σ = 2401814624. Its totient is φ = 1800887040.

The previous prime is 2101311313. The next prime is 2101311341. The reversal of 2101311331 is 1331131012.

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 2101311331 - 2²⁷ = 1967093603 is a prime.

It is a super-2 number, since 2×2101311331² = 8831018619577983122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101311301) 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, 57301 + ... + 86521.

It is an arithmetic number, because the mean of its divisors is an integer number (300226828).

Almost surely, 2^2101311331 is an apocalyptic number.

2101311331 is a deficient number, since it is larger than the sum of its proper divisors (300503293).

2101311331 is a wasteful number, since it uses less digits than its factorization.

2101311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39501.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 2101311331 is about 45840.0625108649. The cubic root of 2101311331 is about 1280.8456592325.

Adding to 2101311331 its reverse (1331131012), we get a palindrome (3432442343).

The spelling of 2101311331 in words is "two billion, one hundred one million, three hundred eleven thousand, three hundred thirty-one".