31301331403223 has 4 divisors (see below), whose sum is σ = 35772950175120. Its totient is φ = 26829712631328.

The previous prime is 31301331403217. The next prime is 31301331403343. The reversal of 31301331403223 is 32230413310313.

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 31301331403223 - 2¹² = 31301331399127 is a prime.

It is a super-2 number, since 2×31301331403223² (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 (31301331463223) 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, 2235809385938 + ... + 2235809385951.

It is an arithmetic number, because the mean of its divisors is an integer number (8943237543780).

Almost surely, 2^{31301331403223} is an apocalyptic number.

31301331403223 is a deficient number, since it is larger than the sum of its proper divisors (4471618771897).

31301331403223 is an equidigital number, since it uses as much as digits as its factorization.

31301331403223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471618771896.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 31301331403223 its reverse (32230413310313), we get a palindrome (63531744713536).

The spelling of 31301331403223 in words is "thirty-one trillion, three hundred one billion, three hundred thirty-one million, four hundred three thousand, two hundred twenty-three".