2231101231 has 12 divisors (see below), whose sum is σ = 2285470096. Its totient is φ = 2177814240.

The previous prime is 2231101219. The next prime is 2231101237. The reversal of 2231101231 is 1321011322.

It is a de Polignac number, because none of the positive numbers 2^k-2231101231 is a prime.

It is a super-3 number, since 3×2231101231³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231101237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 517075 + ... + 521371.

Almost surely, 2^2231101231 is an apocalyptic number.

2231101231 is a deficient number, since it is larger than the sum of its proper divisors (54368865).

2231101231 is an equidigital number, since it uses as much as digits as its factorization.

2231101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4542 (or 4471 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2231101231 is about 47234.5343048918. The cubic root of 2231101231 is about 1306.6915779545.

Adding to 2231101231 its reverse (1321011322), we get a palindrome (3552112553).

The spelling of 2231101231 in words is "two billion, two hundred thirty-one million, one hundred one thousand, two hundred thirty-one".