31311301201223 has 32 divisors (see below), whose sum is σ = 34484133888000. Its totient is φ = 28319169684960.

The previous prime is 31311301201163. The next prime is 31311301201307. The reversal of 31311301201223 is 32210210311313.

It is a cyclic number.

It is not a de Polignac number, because 31311301201223 - 2³² = 31307006233927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311301201823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14023118 + ... + 16101876.

It is an arithmetic number, because the mean of its divisors is an integer number (1077629184000).

Almost surely, 2^{31311301201223} is an apocalyptic number.

31311301201223 is a deficient number, since it is larger than the sum of its proper divisors (3172832686777).

31311301201223 is a wasteful number, since it uses less digits than its factorization.

31311301201223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079155.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31311301201223 its reverse (32210210311313), we get a palindrome (63521511512536).

The spelling of 31311301201223 in words is "thirty-one trillion, three hundred eleven billion, three hundred one million, two hundred one thousand, two hundred twenty-three".