31605241045 has 32 divisors (see below), whose sum is σ = 45409351680. Its totient is φ = 20647176000.

The previous prime is 31605241033. The next prime is 31605241049. The reversal of 31605241045 is 54014250613.

It is a happy number.

It is not a de Polignac number, because 31605241045 - 2⁹ = 31605240533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31605240998 and 31605241016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31605241049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123846 + ... + 280264.

It is an arithmetic number, because the mean of its divisors is an integer number (1419042240).

Almost surely, 2^31605241045 is an apocalyptic number.

31605241045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31605241045 is a deficient number, since it is larger than the sum of its proper divisors (13804110635).

31605241045 is a wasteful number, since it uses less digits than its factorization.

31605241045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156705.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 31605241045 its reverse (54014250613), we get a palindrome (85619491658).

The spelling of 31605241045 in words is "thirty-one billion, six hundred five million, two hundred forty-one thousand, forty-five".