31405545241 has 4 divisors (see below), whose sum is σ = 35892051712. Its totient is φ = 26919038772.

The previous prime is 31405545217. The next prime is 31405545257. The reversal of 31405545241 is 14254550413.

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: 14254550413 = 79 ⋅180437347.

It is a cyclic number.

It is not a de Polignac number, because 31405545241 - 2¹³ = 31405537049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31405545197 and 31405545206.

It is not an unprimeable number, because it can be changed into a prime (31405545271) 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, 2243253225 + ... + 2243253238.

It is an arithmetic number, because the mean of its divisors is an integer number (8973012928).

Almost surely, 2^31405545241 is an apocalyptic number.

It is an amenable number.

31405545241 is a deficient number, since it is larger than the sum of its proper divisors (4486506471).

31405545241 is an equidigital number, since it uses as much as digits as its factorization.

31405545241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4486506470.

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 31405545241 in words is "thirty-one billion, four hundred five million, five hundred forty-five thousand, two hundred forty-one".