2101133131 has 4 divisors (see below), whose sum is σ = 2126448072. Its totient is φ = 2075818192.

The previous prime is 2101133129. The next prime is 2101133137. The reversal of 2101133131 is 1313311012.

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

It is a cyclic number.

It is not a de Polignac number, because 2101133131 - 2¹ = 2101133129 is a prime.

It is a super-2 number, since 2×2101133131² = 8829520868371726322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101133137) 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, 12657346 + ... + 12657511.

It is an arithmetic number, because the mean of its divisors is an integer number (531612018).

Almost surely, 2^2101133131 is an apocalyptic number.

2101133131 is a deficient number, since it is larger than the sum of its proper divisors (25314941).

2101133131 is an equidigital number, since it uses as much as digits as its factorization.

2101133131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25314940.

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

The square root of 2101133131 is about 45838.1187550275. The cubic root of 2101133131 is about 1280.8094511838.

Adding to 2101133131 its reverse (1313311012), we get a palindrome (3414444143).

The spelling of 2101133131 in words is "two billion, one hundred one million, one hundred thirty-three thousand, one hundred thirty-one".