31211140431041 has 4 divisors (see below), whose sum is σ = 31211474980800. Its totient is φ = 31210805881284.

The previous prime is 31211140431019. The next prime is 31211140431049. The reversal of 31211140431041 is 14013404111213.

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 31211140431041 - 2²² = 31211136236737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31211140431041.

It is not an unprimeable number, because it can be changed into a prime (31211140431049) 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, 167134901 + ... + 167321538.

It is an arithmetic number, because the mean of its divisors is an integer number (7802868745200).

Almost surely, 2^{31211140431041} is an apocalyptic number.

It is an amenable number.

31211140431041 is a deficient number, since it is larger than the sum of its proper divisors (334549759).

31211140431041 is an equidigital number, since it uses as much as digits as its factorization.

31211140431041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334549758.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 31211140431041 its reverse (14013404111213), we get a palindrome (45224544542254).

The spelling of 31211140431041 in words is "thirty-one trillion, two hundred eleven billion, one hundred forty million, four hundred thirty-one thousand, forty-one".