31323103113311 has 4 divisors (see below), whose sum is σ = 31323571549032. Its totient is φ = 31322634677592.

The previous prime is 31323103113287. The next prime is 31323103113329. The reversal of 31323103113311 is 11331130132313.

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 31323103113311 - 2³⁸ = 31048225206367 is a prime.

It is a super-2 number, since 2×31323103113311² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31323103113611) 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, 234117545 + ... + 234251298.

It is an arithmetic number, because the mean of its divisors is an integer number (7830892887258).

Almost surely, 2^{31323103113311} is an apocalyptic number.

31323103113311 is a deficient number, since it is larger than the sum of its proper divisors (468435721).

31323103113311 is an equidigital number, since it uses as much as digits as its factorization.

31323103113311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468435720.

The product of its (nonzero) digits is 1458, while the sum is 26.

Adding to 31323103113311 its reverse (11331130132313), we get a palindrome (42654233245624).

The spelling of 31323103113311 in words is "thirty-one trillion, three hundred twenty-three billion, one hundred three million, one hundred thirteen thousand, three hundred eleven".