31161642466 has 8 divisors (see below), whose sum is σ = 46948378320. Its totient is φ = 15512183028.

The previous prime is 31161642433. The next prime is 31161642469. The reversal of 31161642466 is 66424616113.

It is a happy number.

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

It is a super-2 number, since 2×31161642466² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31161642469) 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, 34318536 + ... + 34319443.

It is an arithmetic number, because the mean of its divisors is an integer number (5868547290).

Almost surely, 2^31161642466 is an apocalyptic number.

31161642466 is a deficient number, since it is larger than the sum of its proper divisors (15786735854).

31161642466 is a wasteful number, since it uses less digits than its factorization.

31161642466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68638208.

The product of its digits is 124416, while the sum is 40.

The spelling of 31161642466 in words is "thirty-one billion, one hundred sixty-one million, six hundred forty-two thousand, four hundred sixty-six".