2171452131 has 12 divisors (see below), whose sum is σ = 3252710552. Its totient is φ = 1447634592.

The previous prime is 2171452117. The next prime is 2171452139. The reversal of 2171452131 is 1312541712.

It is not a de Polignac number, because 2171452131 - 2⁵ = 2171452099 is a prime.

It is a super-2 number, since 2×2171452131² = 9430408714448882322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2171452095 and 2171452104.

It is not an unprimeable number, because it can be changed into a prime (2171452139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4467766 + ... + 4468251.

Almost surely, 2^2171452131 is an apocalyptic number.

2171452131 is a deficient number, since it is larger than the sum of its proper divisors (1081258421).

2171452131 is an frugal number, since it uses more digits than its factorization.

2171452131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8936032 (or 8936020 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 2171452131 is about 46598.8425929228. The cubic root of 2171452131 is about 1294.9413132620.

Adding to 2171452131 its reverse (1312541712), we get a palindrome (3483993843).

The spelling of 2171452131 in words is "two billion, one hundred seventy-one million, four hundred fifty-two thousand, one hundred thirty-one".