31422313143 has 18 divisors (see below), whose sum is σ = 49147722936. Its totient is φ = 19336807152.

The previous prime is 31422313127. The next prime is 31422313157. The reversal of 31422313143 is 34131322413.

It is a happy number.

31422313143 is a `hidden beast` number, since 314 + 2 + 2 + 31 + 314 + 3 = 666.

It is not a de Polignac number, because 31422313143 - 2⁴ = 31422313127 is a prime.

It is a super-3 number, since 3×31422313143³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422313123) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10327971 + ... + 10331012.

It is an arithmetic number, because the mean of its divisors is an integer number (2730429052).

Almost surely, 2^31422313143 is an apocalyptic number.

31422313143 is a deficient number, since it is larger than the sum of its proper divisors (17725409793).

31422313143 is a wasteful number, since it uses less digits than its factorization.

31422313143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20659015 (or 20658999 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 31422313143 its reverse (34131322413), we get a palindrome (65553635556).

The spelling of 31422313143 in words is "thirty-one billion, four hundred twenty-two million, three hundred thirteen thousand, one hundred forty-three".