31423240141 has 4 divisors (see below), whose sum is σ = 31428900412. Its totient is φ = 31417579872.

The previous prime is 31423240091. The next prime is 31423240151. The reversal of 31423240141 is 14104232413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14104232413 = 83 ⋅169930511.

It can be written as a sum of positive squares in 2 ways, for example, as 22852368900 + 8570871241 = 151170^2 + 92579^2 .

It is a cyclic number.

It is not a de Polignac number, because 31423240141 - 2⁹ = 31423239629 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 (31423240151) 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, 2821800 + ... + 2832913.

It is an arithmetic number, because the mean of its divisors is an integer number (7857225103).

Almost surely, 2^31423240141 is an apocalyptic number.

It is an amenable number.

31423240141 is a deficient number, since it is larger than the sum of its proper divisors (5660271).

31423240141 is an equidigital number, since it uses as much as digits as its factorization.

31423240141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5660270.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31423240141 its reverse (14104232413), we get a palindrome (45527472554).

The spelling of 31423240141 in words is "thirty-one billion, four hundred twenty-three million, two hundred forty thousand, one hundred forty-one".