2231011123031 has 4 divisors (see below), whose sum is σ = 2231020008672. Its totient is φ = 2231002237392.

The previous prime is 2231011123009. The next prime is 2231011123037. The reversal of 2231011123031 is 1303211101322.

It is a happy number.

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-2231011123031 is a prime.

It is a super-3 number, since 3×2231011123031³ (a number of 38 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 junction number, because it is equal to n+sod(n) for n = 2231011122994 and 2231011123012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231011123037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4054910 + ... + 4572123.

It is an arithmetic number, because the mean of its divisors is an integer number (557755002168).

Almost surely, 2^{2231011123031} is an apocalyptic number.

2231011123031 is a deficient number, since it is larger than the sum of its proper divisors (8885641).

2231011123031 is an equidigital number, since it uses as much as digits as its factorization.

2231011123031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8885640.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2231011123031 its reverse (1303211101322), we get a palindrome (3534222224353).

The spelling of 2231011123031 in words is "two trillion, two hundred thirty-one billion, eleven million, one hundred twenty-three thousand, thirty-one".