2321431636 has 12 divisors (see below), whose sum is σ = 4071678912. Its totient is φ = 1158094808.

The previous prime is 2321431631. The next prime is 2321431639. The reversal of 2321431636 is 6361341232.

It is a junction number, because it is equal to n+sod(n) for n = 2321431598 and 2321431607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321431631) 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, 653260 + ... + 656803.

It is an arithmetic number, because the mean of its divisors is an integer number (339306576).

Almost surely, 2^2321431636 is an apocalyptic number.

It is an amenable number.

2321431636 is a deficient number, since it is larger than the sum of its proper divisors (1750247276).

2321431636 is a wasteful number, since it uses less digits than its factorization.

2321431636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310510 (or 1310508 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 2321431636 is about 48181.2373855218. The cubic root of 2321431636 is about 1324.0934367844.

Adding to 2321431636 its reverse (6361341232), we get a palindrome (8682772868).

The spelling of 2321431636 in words is "two billion, three hundred twenty-one million, four hundred thirty-one thousand, six hundred thirty-six".