32161312 has 12 divisors (see below), whose sum is σ = 63317646. Its totient is φ = 16080640.

The previous prime is 32161303. The next prime is 32161333. The reversal of 32161312 is 21316123.

It can be written as a sum of positive squares in only one way, i.e., 18352656 + 13808656 = 4284^2 + 3716^2 .

It is a super-2 number, since 2×32161312² = 2068699979122688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 32161312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502489 + ... + 502552.

Almost surely, 2^32161312 is an apocalyptic number.

32161312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

32161312 is a deficient number, since it is larger than the sum of its proper divisors (31156334).

32161312 is a wasteful number, since it uses less digits than its factorization.

32161312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005051 (or 1005043 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 32161312 is about 5671.0944270044. The cubic root of 32161312 is about 318.0127890641.

Adding to 32161312 its reverse (21316123), we get a palindrome (53477435).

It can be divided in two parts, 32 and 161312, that multiplied together give a square (5161984 = 2272²).

The spelling of 32161312 in words is "thirty-two million, one hundred sixty-one thousand, three hundred twelve".