31505134045 has 16 divisors (see below), whose sum is σ = 47134954368. Its totient is φ = 19639563840.

The previous prime is 31505134021. The next prime is 31505134081. The reversal of 31505134045 is 54043150513.

It is not a de Polignac number, because 31505134045 - 2¹¹ = 31505131997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31505133998 and 31505134016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40915374 + ... + 40916143.

It is an arithmetic number, because the mean of its divisors is an integer number (2945934648).

Almost surely, 2^31505134045 is an apocalyptic number.

31505134045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31505134045 is a deficient number, since it is larger than the sum of its proper divisors (15629820323).

31505134045 is a wasteful number, since it uses less digits than its factorization.

31505134045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81831540.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 31505134045 its reverse (54043150513), we get a palindrome (85548284558).

The spelling of 31505134045 in words is "thirty-one billion, five hundred five million, one hundred thirty-four thousand, forty-five".