2122431231 has 8 divisors (see below), whose sum is σ = 2839909120. Its totient is φ = 1409953752.

The previous prime is 2122431221. The next prime is 2122431247. The reversal of 2122431231 is 1321342212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2122431231 - 2¹⁸ = 2122169087 is a prime.

It is a super-2 number, since 2×2122431231² = 9009428660648350722, 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 = 2122431198 and 2122431207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122431221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1249111 + ... + 1250808.

It is an arithmetic number, because the mean of its divisors is an integer number (354988640).

Almost surely, 2^2122431231 is an apocalyptic number.

2122431231 is a deficient number, since it is larger than the sum of its proper divisors (717477889).

2122431231 is a wasteful number, since it uses less digits than its factorization.

2122431231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500205.

The product of its digits is 576, while the sum is 21.

The square root of 2122431231 is about 46069.8516494247. The cubic root of 2122431231 is about 1285.1225450007.

Adding to 2122431231 its reverse (1321342212), we get a palindrome (3443773443).

The spelling of 2122431231 in words is "two billion, one hundred twenty-two million, four hundred thirty-one thousand, two hundred thirty-one".