31841480813 has 4 divisors (see below), whose sum is σ = 32939462940. Its totient is φ = 30743498688.

The previous prime is 31841480753. The next prime is 31841480819. The reversal of 31841480813 is 31808414813.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7629498409 + 24211982404 = 87347^2 + 155602^2 .

It is a cyclic number.

It is not a de Polignac number, because 31841480813 - 2¹⁴ = 31841464429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31841480819) 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, 548991020 + ... + 548991077.

It is an arithmetic number, because the mean of its divisors is an integer number (8234865735).

Almost surely, 2^31841480813 is an apocalyptic number.

It is an amenable number.

31841480813 is a deficient number, since it is larger than the sum of its proper divisors (1097982127).

31841480813 is a wasteful number, since it uses less digits than its factorization.

31841480813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097982126.

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 31841480813 in words is "thirty-one billion, eight hundred forty-one million, four hundred eighty thousand, eight hundred thirteen".