31316040240223 has 4 divisors (see below), whose sum is σ = 31593173339808. Its totient is φ = 31038907140640.

The previous prime is 31316040240169. The next prime is 31316040240271. The reversal of 31316040240223 is 32204204061313.

It is a happy number.

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 31316040240223 - 2⁹ = 31316040239711 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 (31316040240293) 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, 138566549623 + ... + 138566549848.

It is an arithmetic number, because the mean of its divisors is an integer number (7898293334952).

Almost surely, 2^{31316040240223} is an apocalyptic number.

31316040240223 is a deficient number, since it is larger than the sum of its proper divisors (277133099585).

31316040240223 is a wasteful number, since it uses less digits than its factorization.

31316040240223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277133099584.

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 31316040240223 in words is "thirty-one trillion, three hundred sixteen billion, forty million, two hundred forty thousand, two hundred twenty-three".