31343909641 has 32 divisors (see below), whose sum is σ = 36040386816. Its totient is φ = 26998272000.

The previous prime is 31343909587. The next prime is 31343909669. The reversal of 31343909641 is 14690934313.

It is a cyclic number.

It is not a de Polignac number, because 31343909641 - 2¹⁵ = 31343876873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31343909671) 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 31 ways as a sum of consecutive naturals, for example, 11228956 + ... + 11231746.

It is an arithmetic number, because the mean of its divisors is an integer number (1126262088).

Almost surely, 2^31343909641 is an apocalyptic number.

It is an amenable number.

31343909641 is a deficient number, since it is larger than the sum of its proper divisors (4696477175).

31343909641 is a wasteful number, since it uses less digits than its factorization.

31343909641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3553.

The product of its (nonzero) digits is 209952, while the sum is 43.

The spelling of 31343909641 in words is "thirty-one billion, three hundred forty-three million, nine hundred nine thousand, six hundred forty-one".