31223143120401 has 24 divisors (see below), whose sum is σ = 46864198108000. Its totient is φ = 20773714380192.

The previous prime is 31223143120399. The next prime is 31223143120439. The reversal of 31223143120401 is 10402134132213.

31223143120401 is a `hidden beast` number, since 3 + 1 + 2 + 23 + 1 + 431 + 204 + 0 + 1 = 666.

It is not a de Polignac number, because 31223143120401 - 2¹ = 31223143120399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31223143120471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128626540 + ... + 128869053.

Almost surely, 2^{31223143120401} is an apocalyptic number.

It is an amenable number.

31223143120401 is a deficient number, since it is larger than the sum of its proper divisors (15641054987599).

31223143120401 is an equidigital number, since it uses as much as digits as its factorization.

31223143120401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257496107 (or 257496095 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 31223143120401 its reverse (10402134132213), we get a palindrome (41625277252614).

The spelling of 31223143120401 in words is "thirty-one trillion, two hundred twenty-three billion, one hundred forty-three million, one hundred twenty thousand, four hundred one".