2066531331 has 16 divisors (see below), whose sum is σ = 2845859840. Its totient is φ = 1332495360.

The previous prime is 2066531303. The next prime is 2066531459. The reversal of 2066531331 is 1331356602.

It is a happy number.

It is not a de Polignac number, because 2066531331 - 2⁹ = 2066530819 is a prime.

It is a super-2 number, since 2×2066531331² = 8541103484009263122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066541331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194115 + ... + 204483.

It is an arithmetic number, because the mean of its divisors is an integer number (177866240).

Almost surely, 2^2066531331 is an apocalyptic number.

2066531331 is a deficient number, since it is larger than the sum of its proper divisors (779328509).

2066531331 is a wasteful number, since it uses less digits than its factorization.

2066531331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12546.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 2066531331 is about 45459.1171383695. The cubic root of 2066531331 is about 1273.7396400281.

Adding to 2066531331 its reverse (1331356602), we get a palindrome (3397887933).

The spelling of 2066531331 in words is "two billion, sixty-six million, five hundred thirty-one thousand, three hundred thirty-one".