231608522 has 4 divisors (see below), whose sum is σ = 347412786. Its totient is φ = 115804260.

The previous prime is 231608483. The next prime is 231608557. The reversal of 231608522 is 225806132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 228040201 + 3568321 = 15101^2 + 1889^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57902129 + ... + 57902132.

Almost surely, 2^231608522 is an apocalyptic number.

231608522 is a deficient number, since it is larger than the sum of its proper divisors (115804264).

231608522 is a wasteful number, since it uses less digits than its factorization.

231608522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115804263.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 231608522 is about 15218.6898910517. The cubic root of 231608522 is about 614.1175543363.

The spelling of 231608522 in words is "two hundred thirty-one million, six hundred eight thousand, five hundred twenty-two".