31438954827 has 72 divisors (see below), whose sum is σ = 55897305360. Its totient is φ = 16930529280.

The previous prime is 31438954793. The next prime is 31438954829. The reversal of 31438954827 is 72845983413.

It is a happy number.

31438954827 is a `hidden beast` number, since 3 + 14 + 3 + 89 + 548 + 2 + 7 = 666.

It is not a de Polignac number, because 31438954827 - 2¹⁶ = 31438889291 is a prime.

It is a super-2 number, since 2×31438954827² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31438954829) 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 71 ways as a sum of consecutive naturals, for example, 1607427 + ... + 1626867.

Almost surely, 2^31438954827 is an apocalyptic number.

31438954827 is a deficient number, since it is larger than the sum of its proper divisors (24458350533).

31438954827 is a wasteful number, since it uses less digits than its factorization.

31438954827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19673 (or 19663 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 31438954827 in words is "thirty-one billion, four hundred thirty-eight million, nine hundred fifty-four thousand, eight hundred twenty-seven".