31131053120223 has 24 divisors (see below), whose sum is σ = 51391131662208. Its totient is φ = 17789108540112.

The previous prime is 31131053120221. The next prime is 31131053120267. The reversal of 31131053120223 is 32202135013113.

31131053120223 is a `hidden beast` number, since 3 + 1 + 1 + 310 + 5 + 3 + 120 + 223 = 666.

It is not a de Polignac number, because 31131053120223 - 2¹ = 31131053120221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31131053120221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20632540 + ... + 22089902.

It is an arithmetic number, because the mean of its divisors is an integer number (2141297152592).

Almost surely, 2^{31131053120223} is an apocalyptic number.

31131053120223 is a deficient number, since it is larger than the sum of its proper divisors (20260078541985).

31131053120223 is a wasteful number, since it uses less digits than its factorization.

31131053120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796443 (or 1796440 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 31131053120223 its reverse (32202135013113), we get a palindrome (63333188133336).

The spelling of 31131053120223 in words is "thirty-one trillion, one hundred thirty-one billion, fifty-three million, one hundred twenty thousand, two hundred twenty-three".