2126311231 has 8 divisors (see below), whose sum is σ = 2326624128. Its totient is φ = 1927167000.

The previous prime is 2126311189. The next prime is 2126311241. The reversal of 2126311231 is 1321136212.

It is a happy number.

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

It is not a de Polignac number, because 2126311231 - 2¹¹ = 2126309183 is a prime.

It is a super-2 number, since 2×2126311231² = 9042398902153470722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126311241) 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, 288355 + ... + 295636.

It is an arithmetic number, because the mean of its divisors is an integer number (290828016).

Almost surely, 2^2126311231 is an apocalyptic number.

2126311231 is a deficient number, since it is larger than the sum of its proper divisors (200312897).

2126311231 is a wasteful number, since it uses less digits than its factorization.

2126311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584333.

The product of its digits is 432, while the sum is 22.

The square root of 2126311231 is about 46111.9423902312. The cubic root of 2126311231 is about 1285.9051757918.

Adding to 2126311231 its reverse (1321136212), we get a palindrome (3447447443).

The spelling of 2126311231 in words is "two billion, one hundred twenty-six million, three hundred eleven thousand, two hundred thirty-one".