2231122031 has 4 divisors (see below), whose sum is σ = 2267697864. Its totient is φ = 2194546200.

The previous prime is 2231121983. The next prime is 2231122073. The reversal of 2231122031 is 1302211322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231122031 is a prime.

It is a super-3 number, since 3×2231122031³ (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 (2231121031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18287825 + ... + 18287946.

It is an arithmetic number, because the mean of its divisors is an integer number (566924466).

Almost surely, 2^2231122031 is an apocalyptic number.

2231122031 is a deficient number, since it is larger than the sum of its proper divisors (36575833).

2231122031 is an equidigital number, since it uses as much as digits as its factorization.

2231122031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36575832.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2231122031 is about 47234.7544822666. The cubic root of 2231122031 is about 1306.6956385950.

Adding to 2231122031 its reverse (1302211322), we get a palindrome (3533333353).

The spelling of 2231122031 in words is "two billion, two hundred thirty-one million, one hundred twenty-two thousand, thirty-one".