31040236640441 has 4 divisors (see below), whose sum is σ = 35474556160512. Its totient is φ = 26605917120372.

The previous prime is 31040236640437. The next prime is 31040236640467. The reversal of 31040236640441 is 14404663204013.

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 31040236640441 - 2² = 31040236640437 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31040236640395 and 31040236640404.

It is not an unprimeable number, because it can be changed into a prime (31040236640471) 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, 2217159760025 + ... + 2217159760038.

It is an arithmetic number, because the mean of its divisors is an integer number (8868639040128).

Almost surely, 2^{31040236640441} is an apocalyptic number.

It is an amenable number.

31040236640441 is a deficient number, since it is larger than the sum of its proper divisors (4434319520071).

31040236640441 is an equidigital number, since it uses as much as digits as its factorization.

31040236640441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434319520070.

The product of its (nonzero) digits is 165888, while the sum is 38.

Adding to 31040236640441 its reverse (14404663204013), we get a palindrome (45444899844454).

The spelling of 31040236640441 in words is "thirty-one trillion, forty billion, two hundred thirty-six million, six hundred forty thousand, four hundred forty-one".