31577164642 has 8 divisors (see below), whose sum is σ = 47825608896. Its totient is φ = 15635295012.

The previous prime is 31577164637. The next prime is 31577164643. The reversal of 31577164642 is 24646177513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31577164592 and 31577164601.

It is not an unprimeable number, because it can be changed into a prime (31577164643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76643398 + ... + 76643809.

It is an arithmetic number, because the mean of its divisors is an integer number (5978201112).

Almost surely, 2^31577164642 is an apocalyptic number.

31577164642 is a deficient number, since it is larger than the sum of its proper divisors (16248444254).

31577164642 is a wasteful number, since it uses less digits than its factorization.

31577164642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153287312.

The product of its digits is 846720, while the sum is 46.

The spelling of 31577164642 in words is "thirty-one billion, five hundred seventy-seven million, one hundred sixty-four thousand, six hundred forty-two".