31564361041 has 4 divisors (see below), whose sum is σ = 31566133872. Its totient is φ = 31562588212.

The previous prime is 31564361039. The next prime is 31564361063. The reversal of 31564361041 is 14016346513.

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 31564361041 - 2¹ = 31564361039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31564360988 and 31564361006.

It is not an unprimeable number, because it can be changed into a prime (31564361071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859435 + ... + 895408.

It is an arithmetic number, because the mean of its divisors is an integer number (7891533468).

Almost surely, 2^31564361041 is an apocalyptic number.

It is an amenable number.

31564361041 is a deficient number, since it is larger than the sum of its proper divisors (1772831).

31564361041 is a wasteful number, since it uses less digits than its factorization.

31564361041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772830.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 31564361041 in words is "thirty-one billion, five hundred sixty-four million, three hundred sixty-one thousand, forty-one".