231011213323733 has 2 divisors, whose sum is σ = 231011213323734. Its totient is φ = 231011213323732.

The previous prime is 231011213323729. The next prime is 231011213323747. The reversal of 231011213323733 is 337323312110132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213500520285649 + 17510693038084 = 14611657^2 + 4184578^2 .

It is a cyclic number.

It is not a de Polignac number, because 231011213323733 - 2² = 231011213323729 is a prime.

It is a super-2 number, since 2×231011213323733² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231011213323693 and 231011213323702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231011213323333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115505606661866 + 115505606661867.

It is an arithmetic number, because the mean of its divisors is an integer number (115505606661867).

Almost surely, 2^{231011213323733} is an apocalyptic number.

It is an amenable number.

231011213323733 is a deficient number, since it is larger than the sum of its proper divisors (1).

231011213323733 is an equidigital number, since it uses as much as digits as its factorization.

231011213323733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 35.

Adding to 231011213323733 its reverse (337323312110132), we get a palindrome (568334525433865).

The spelling of 231011213323733 in words is "two hundred thirty-one trillion, eleven billion, two hundred thirteen million, three hundred twenty-three thousand, seven hundred thirty-three".