2231131323031 has 8 divisors (see below), whose sum is σ = 2507224497120. Its totient is φ = 1969962104352.

The previous prime is 2231131322999. The next prime is 2231131323041. The reversal of 2231131323031 is 1303231311322.

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

It is a cyclic number.

It is not a de Polignac number, because 2231131323031 - 2⁵ = 2231131322999 is a prime.

It is a super-3 number, since 3×2231131323031³ (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 = 2231131322987 and 2231131323005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231131323041) 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, 3730988536 + ... + 3730989133.

It is an arithmetic number, because the mean of its divisors is an integer number (313403062140).

Almost surely, 2^{2231131323031} is an apocalyptic number.

2231131323031 is a deficient number, since it is larger than the sum of its proper divisors (276093174089).

2231131323031 is a wasteful number, since it uses less digits than its factorization.

2231131323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7461977705.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 2231131323031 its reverse (1303231311322), we get a palindrome (3534362634353).

The spelling of 2231131323031 in words is "two trillion, two hundred thirty-one billion, one hundred thirty-one million, three hundred twenty-three thousand, thirty-one".