31045040631811 has 4 divisors (see below), whose sum is σ = 31802236744824. Its totient is φ = 30287844518800.

The previous prime is 31045040631779. The next prime is 31045040631823. The reversal of 31045040631811 is 11813604054013.

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 31045040631811 - 2⁵ = 31045040631779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31045040631851) 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, 378598056445 + ... + 378598056526.

It is an arithmetic number, because the mean of its divisors is an integer number (7950559186206).

Almost surely, 2^{31045040631811} is an apocalyptic number.

31045040631811 is a deficient number, since it is larger than the sum of its proper divisors (757196113013).

31045040631811 is an equidigital number, since it uses as much as digits as its factorization.

31045040631811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757196113012.

The product of its (nonzero) digits is 34560, while the sum is 37.

Adding to 31045040631811 its reverse (11813604054013), we get a palindrome (42858644685824).

The spelling of 31045040631811 in words is "thirty-one trillion, forty-five billion, forty million, six hundred thirty-one thousand, eight hundred eleven".