31301223013223 has 4 divisors (see below), whose sum is σ = 31301490568368. Its totient is φ = 31300955458080.

The previous prime is 31301223013199. The next prime is 31301223013237. The reversal of 31301223013223 is 32231032210313.

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 31301223013223 - 2³² = 31296928045927 is a prime.

It is a super-2 number, since 2×31301223013223² (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 = 31301223013192 and 31301223013201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301223013243) 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, 133602011 + ... + 133836092.

It is an arithmetic number, because the mean of its divisors is an integer number (7825372642092).

Almost surely, 2^{31301223013223} is an apocalyptic number.

31301223013223 is a deficient number, since it is larger than the sum of its proper divisors (267555145).

31301223013223 is a wasteful number, since it uses less digits than its factorization.

31301223013223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267555144.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 31301223013223 its reverse (32231032210313), we get a palindrome (63532255223536).

The spelling of 31301223013223 in words is "thirty-one trillion, three hundred one billion, two hundred twenty-three million, thirteen thousand, two hundred twenty-three".