4323131231 has 4 divisors (see below), whose sum is σ = 4324828464. Its totient is φ = 4321434000.

The previous prime is 4323131213. The next prime is 4323131233. The reversal of 4323131231 is 1321313234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1321313234 = 2 ⋅660656617.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4323131231 is a prime.

It is a super-2 number, since 2×4323131231² = 37378927280895150722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4323131197 and 4323131206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4323131233) 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, 844790 + ... + 849891.

It is an arithmetic number, because the mean of its divisors is an integer number (1081207116).

Almost surely, 2^4323131231 is an apocalyptic number.

4323131231 is a deficient number, since it is larger than the sum of its proper divisors (1697233).

4323131231 is a wasteful number, since it uses less digits than its factorization.

4323131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697232.

The product of its digits is 1296, while the sum is 23.

The square root of 4323131231 is about 65750.5226671241. The cubic root of 4323131231 is about 1629.0439688403.

Adding to 4323131231 its reverse (1321313234), we get a palindrome (5644444465).

The spelling of 4323131231 in words is "four billion, three hundred twenty-three million, one hundred thirty-one thousand, two hundred thirty-one".