31446052818 has 16 divisors (see below), whose sum is σ = 64426059936. Its totient is φ = 10226358560.

The previous prime is 31446052817. The next prime is 31446052819. The reversal of 31446052818 is 81825064413.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31446052817) and next prime (31446052819).

It is a super-2 number, since 2×31446052818² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31446052818.

It is not an unprimeable number, because it can be changed into a prime (31446052817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63914496 + ... + 63914987.

It is an arithmetic number, because the mean of its divisors is an integer number (4026628746).

Almost surely, 2^31446052818 is an apocalyptic number.

31446052818 is an abundant number, since it is smaller than the sum of its proper divisors (32980007118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31446052818 is a wasteful number, since it uses less digits than its factorization.

31446052818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127829529.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 31446052818 in words is "thirty-one billion, four hundred forty-six million, fifty-two thousand, eight hundred eighteen".