2120231506 has 8 divisors (see below), whose sum is σ = 3185860860. Its totient is φ = 1058277888.

The previous prime is 2120231497. The next prime is 2120231507. The reversal of 2120231506 is 6051320212.

It can be written as a sum of positive squares in 2 ways, for example, as 2010715281 + 109516225 = 44841^2 + 10465^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2120231507) 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, 917491 + ... + 919798.

Almost surely, 2^2120231506 is an apocalyptic number.

2120231506 is a deficient number, since it is larger than the sum of its proper divisors (1065629354).

2120231506 is a wasteful number, since it uses less digits than its factorization.

2120231506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837868.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2120231506 is about 46045.9716587673. The cubic root of 2120231506 is about 1284.6784170068.

Adding to 2120231506 its reverse (6051320212), we get a palindrome (8171551718).

The spelling of 2120231506 in words is "two billion, one hundred twenty million, two hundred thirty-one thousand, five hundred six".