31577672162 has 4 divisors (see below), whose sum is σ = 47366508246. Its totient is φ = 15788836080.

The previous prime is 31577672149. The next prime is 31577672171. The reversal of 31577672162 is 26127677513.

It is a happy number.

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., 21222371041 + 10355301121 = 145679^2 + 101761^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7894418039 + ... + 7894418042.

Almost surely, 2^31577672162 is an apocalyptic number.

31577672162 is a deficient number, since it is larger than the sum of its proper divisors (15788836084).

31577672162 is a wasteful number, since it uses less digits than its factorization.

31577672162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15788836083.

The product of its digits is 740880, while the sum is 47.

The spelling of 31577672162 in words is "thirty-one billion, five hundred seventy-seven million, six hundred seventy-two thousand, one hundred sixty-two".