2331331144 has 8 divisors (see below), whose sum is σ = 4371245910. Its totient is φ = 1165665568.

The previous prime is 2331331111. The next prime is 2331331153. The reversal of 2331331144 is 4411331332.

It can be written as a sum of positive squares in only one way, i.e., 2243159044 + 88172100 = 47362^2 + 9390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145708189 + ... + 145708204.

Almost surely, 2^2331331144 is an apocalyptic number.

It is an amenable number.

2331331144 is a deficient number, since it is larger than the sum of its proper divisors (2039914766).

2331331144 is a wasteful number, since it uses less digits than its factorization.

2331331144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291416399 (or 291416395 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

The square root of 2331331144 is about 48283.8600776698. The cubic root of 2331331144 is about 1325.9729214077.

Adding to 2331331144 its reverse (4411331332), we get a palindrome (6742662476).

The spelling of 2331331144 in words is "two billion, three hundred thirty-one million, three hundred thirty-one thousand, one hundred forty-four".