2101532331 has 4 divisors (see below), whose sum is σ = 2802043112. Its totient is φ = 1401021552.

The previous prime is 2101532281. The next prime is 2101532399. The reversal of 2101532331 is 1332351012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2101532331 - 2⁶ = 2101532267 is a prime.

It is a super-2 number, since 2×2101532331² = 8832876276476587122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101532298 and 2101532307.

It is not an unprimeable number, because it can be changed into a prime (2101532731) 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, 350255386 + ... + 350255391.

It is an arithmetic number, because the mean of its divisors is an integer number (700510778).

Almost surely, 2^2101532331 is an apocalyptic number.

2101532331 is a deficient number, since it is larger than the sum of its proper divisors (700510781).

2101532331 is an equidigital number, since it uses as much as digits as its factorization.

2101532331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700510780.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 2101532331 is about 45842.4730026642. The cubic root of 2101532331 is about 1280.8905608713.

Adding to 2101532331 its reverse (1332351012), we get a palindrome (3433883343).

The spelling of 2101532331 in words is "two billion, one hundred one million, five hundred thirty-two thousand, three hundred thirty-one".