31606154541 has 48 divisors (see below), whose sum is σ = 51322114480. Its totient is φ = 18613877760.

The previous prime is 31606154527. The next prime is 31606154581. The reversal of 31606154541 is 14545160613.

31606154541 is a `hidden beast` number, since 3 + 1 + 6 + 0 + 61 + 54 + 541 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 9097153641 + 22509000900 = 95379^2 + 150030^2 .

It is not a de Polignac number, because 31606154541 - 2⁶ = 31606154477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31606154496 and 31606154505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31606154581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 204225 + ... + 323913.

Almost surely, 2^31606154541 is an apocalyptic number.

It is an amenable number.

31606154541 is a deficient number, since it is larger than the sum of its proper divisors (19715959939).

31606154541 is a wasteful number, since it uses less digits than its factorization.

31606154541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119806 (or 119803 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 31606154541 in words is "thirty-one billion, six hundred six million, one hundred fifty-four thousand, five hundred forty-one".