31534730557 has 4 divisors (see below), whose sum is σ = 34401524256. Its totient is φ = 28667936860.

The previous prime is 31534730477. The next prime is 31534730609. The reversal of 31534730557 is 75503743513.

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.

It is a cyclic number.

It is not a de Polignac number, because 31534730557 - 2¹¹ = 31534728509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31534730657) 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 3 ways as a sum of consecutive naturals, for example, 1433396833 + ... + 1433396854.

It is an arithmetic number, because the mean of its divisors is an integer number (8600381064).

Almost surely, 2^31534730557 is an apocalyptic number.

It is an amenable number.

31534730557 is a deficient number, since it is larger than the sum of its proper divisors (2866793699).

31534730557 is a wasteful number, since it uses less digits than its factorization.

31534730557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866793698.

The product of its (nonzero) digits is 661500, while the sum is 43.

The spelling of 31534730557 in words is "thirty-one billion, five hundred thirty-four million, seven hundred thirty thousand, five hundred fifty-seven".