31143422135 has 8 divisors (see below), whose sum is σ = 42710978976. Its totient is φ = 21355489440.

The previous prime is 31143422117. The next prime is 31143422137. The reversal of 31143422135 is 53122434113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31143422135 - 2⁸ = 31143421879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31143422098 and 31143422107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143422137) 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 7 ways as a sum of consecutive naturals, for example, 444905996 + ... + 444906065.

It is an arithmetic number, because the mean of its divisors is an integer number (5338872372).

Almost surely, 2^31143422135 is an apocalyptic number.

31143422135 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

31143422135 is a deficient number, since it is larger than the sum of its proper divisors (11567556841).

31143422135 is an equidigital number, since it uses as much as digits as its factorization.

31143422135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889812073.

The product of its digits is 8640, while the sum is 29.

Adding to 31143422135 its reverse (53122434113), we get a palindrome (84265856248).

The spelling of 31143422135 in words is "thirty-one billion, one hundred forty-three million, four hundred twenty-two thousand, one hundred thirty-five".