2321431040 has 40 divisors (see below), whose sum is σ = 5565999780. Its totient is φ = 928571392.

The previous prime is 2321431027. The next prime is 2321431043. The reversal of 2321431040 is 401341232.

It can be written as a sum of positive squares in 2 ways, for example, as 2214267136 + 107163904 = 47056^2 + 10352^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (2321431043) 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, 450845 + ... + 455964.

Almost surely, 2^2321431040 is an apocalyptic number.

2321431040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2321431040 is an abundant number, since it is smaller than the sum of its proper divisors (3244568740).

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

2321431040 is an frugal number, since it uses more digits than its factorization.

2321431040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906832 (or 906816 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2321431040 is about 48181.2312005412. The cubic root of 2321431040 is about 1324.0933234693.

Adding to 2321431040 its reverse (401341232), we get a palindrome (2722772272).

The spelling of 2321431040 in words is "two billion, three hundred twenty-one million, four hundred thirty-one thousand, forty".