31423214131 has 4 divisors (see below), whose sum is σ = 31432440672. Its totient is φ = 31413987592.

The previous prime is 31423214093. The next prime is 31423214143. The reversal of 31423214131 is 13141232413.

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 31423214131 - 2¹¹ = 31423212083 is a prime.

It is a super-2 number, since 2×31423214131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31423214096 and 31423214105.

It is not an unprimeable number, because it can be changed into a prime (31423217131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4608160 + ... + 4614973.

It is an arithmetic number, because the mean of its divisors is an integer number (7858110168).

Almost surely, 2^31423214131 is an apocalyptic number.

31423214131 is a deficient number, since it is larger than the sum of its proper divisors (9226541).

31423214131 is an equidigital number, since it uses as much as digits as its factorization.

31423214131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9226540.

The product of its digits is 1728, while the sum is 25.

Adding to 31423214131 its reverse (13141232413), we get a palindrome (44564446544).

The spelling of 31423214131 in words is "thirty-one billion, four hundred twenty-three million, two hundred fourteen thousand, one hundred thirty-one".