2312211231 has 32 divisors (see below), whose sum is σ = 3807440640. Its totient is φ = 1374890400.

The previous prime is 2312211227. The next prime is 2312211323. The reversal of 2312211231 is 1321122132.

2312211231 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2312211231 - 2² = 2312211227 is a prime.

It is a super-2 number, since 2×2312211231² = 10692641553525070722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312211131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57705 + ... + 89186.

It is an arithmetic number, because the mean of its divisors is an integer number (118982520).

Almost surely, 2^2312211231 is an apocalyptic number.

2312211231 is a deficient number, since it is larger than the sum of its proper divisors (1495229409).

2312211231 is a wasteful number, since it uses less digits than its factorization.

2312211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146964 (or 146958 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 2312211231 is about 48085.4575833484. The cubic root of 2312211231 is about 1322.3380721145.

Adding to 2312211231 its reverse (1321122132), we get a palindrome (3633333363).

The spelling of 2312211231 in words is "two billion, three hundred twelve million, two hundred eleven thousand, two hundred thirty-one".