31320210023141 has 4 divisors (see below), whose sum is σ = 33729456948012. Its totient is φ = 28910963098272.

The previous prime is 31320210023129. The next prime is 31320210023161. The reversal of 31320210023141 is 14132001202313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4002120280900 + 27318089742241 = 2000530^2 + 5226671^2 .

It is a cyclic number.

It is not a de Polignac number, because 31320210023141 - 2¹⁸ = 31320209760997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320210023161) 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, 1204623462416 + ... + 1204623462441.

It is an arithmetic number, because the mean of its divisors is an integer number (8432364237003).

Almost surely, 2^{31320210023141} is an apocalyptic number.

It is an amenable number.

31320210023141 is a deficient number, since it is larger than the sum of its proper divisors (2409246924871).

31320210023141 is a wasteful number, since it uses less digits than its factorization.

31320210023141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409246924870.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31320210023141 its reverse (14132001202313), we get a palindrome (45452211225454).

The spelling of 31320210023141 in words is "thirty-one trillion, three hundred twenty billion, two hundred ten million, twenty-three thousand, one hundred forty-one".