31330513441 has 4 divisors (see below), whose sum is σ = 31468533552. Its totient is φ = 31192493332.

The previous prime is 31330513433. The next prime is 31330513447. The reversal of 31330513441 is 14431503313.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14431503313 = 36787 ⋅392299.

It is a cyclic number.

It is not a de Polignac number, because 31330513441 - 2³ = 31330513433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31330513447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69009715 + ... + 69010168.

It is an arithmetic number, because the mean of its divisors is an integer number (7867133388).

Almost surely, 2^31330513441 is an apocalyptic number.

It is an amenable number.

31330513441 is a deficient number, since it is larger than the sum of its proper divisors (138020111).

31330513441 is a wasteful number, since it uses less digits than its factorization.

31330513441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138020110.

The product of its (nonzero) digits is 6480, while the sum is 28.

The spelling of 31330513441 in words is "thirty-one billion, three hundred thirty million, five hundred thirteen thousand, four hundred forty-one".