31101320330231 has 4 divisors (see below), whose sum is σ = 31101432530472. Its totient is φ = 31101208129992.

The previous prime is 31101320330221. The next prime is 31101320330293. The reversal of 31101320330231 is 13203302310113.

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

It is a cyclic number.

It is not a de Polignac number, because 31101320330231 - 2⁶ = 31101320330167 is a prime.

It is a super-2 number, since 2×31101320330231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31101320330197 and 31101320330206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31101320330221) 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, 55683296 + ... + 56239061.

It is an arithmetic number, because the mean of its divisors is an integer number (7775358132618).

Almost surely, 2^{31101320330231} is an apocalyptic number.

31101320330231 is a deficient number, since it is larger than the sum of its proper divisors (112200241).

31101320330231 is a wasteful number, since it uses less digits than its factorization.

31101320330231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112200240.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 31101320330231 its reverse (13203302310113), we get a palindrome (44304622640344).

The spelling of 31101320330231 in words is "thirty-one trillion, one hundred one billion, three hundred twenty million, three hundred thirty thousand, two hundred thirty-one".