31143323041 has 4 divisors (see below), whose sum is σ = 31537542400. Its totient is φ = 30749103684.

The previous prime is 31143322979. The next prime is 31143323069. The reversal of 31143323041 is 14032334113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31143323041 - 2⁷ = 31143322913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31143322997 and 31143323015.

It is not an unprimeable number, because it can be changed into a prime (31143323941) 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, 197109561 + ... + 197109718.

It is an arithmetic number, because the mean of its divisors is an integer number (7884385600).

Almost surely, 2^31143323041 is an apocalyptic number.

It is an amenable number.

31143323041 is a deficient number, since it is larger than the sum of its proper divisors (394219359).

31143323041 is an equidigital number, since it uses as much as digits as its factorization.

31143323041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394219358.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31143323041 its reverse (14032334113), we get a palindrome (45175657154).

The spelling of 31143323041 in words is "thirty-one billion, one hundred forty-three million, three hundred twenty-three thousand, forty-one".