2331945 has 48 divisors (see below), whose sum is σ = 5046912. Its totient is φ = 967680.

The previous prime is 2331937. The next prime is 2331949. The reversal of 2331945 is 5491332.

It is not a de Polignac number, because 2331945 - 2³ = 2331937 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331949) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3129 + ... + 3801.

It is an arithmetic number, because the mean of its divisors is an integer number (105144).

2^2331945 is an apocalyptic number.

It is an amenable number.

2331945 is an abundant number, since it is smaller than the sum of its proper divisors (2714967).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2331945 is a wasteful number, since it uses less digits than its factorization.

2331945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 699 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 2331945 is about 1527.0707252776. The cubic root of 2331945 is about 132.6089290548.

The spelling of 2331945 in words is "two million, three hundred thirty-one thousand, nine hundred forty-five".