2331220154 has 16 divisors (see below), whose sum is σ = 3710715840. Its totient is φ = 1096032960.

The previous prime is 2331220147. The next prime is 2331220159. The reversal of 2331220154 is 4510221332.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (2331220159) 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 7 ways as a sum of consecutive naturals, for example, 426767 + ... + 432194.

It is an arithmetic number, because the mean of its divisors is an integer number (231919740).

Almost surely, 2^2331220154 is an apocalyptic number.

2331220154 is a deficient number, since it is larger than the sum of its proper divisors (1379495686).

2331220154 is a wasteful number, since it uses less digits than its factorization.

2331220154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859045.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2331220154 is about 48282.7107151204. The cubic root of 2331220154 is about 1325.9518787700.

Adding to 2331220154 its reverse (4510221332), we get a palindrome (6841441486).

The spelling of 2331220154 in words is "two billion, three hundred thirty-one million, two hundred twenty thousand, one hundred fifty-four".