40210312 has 8 divisors (see below), whose sum is σ = 75394350. Its totient is φ = 20105152.

The previous prime is 40210309. The next prime is 40210343. The reversal of 40210312 is 21301204.

It can be written as a sum of positive squares in only one way, i.e., 23677956 + 16532356 = 4866^2 + 4066^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×40210312² = 3233738382274688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40210292 and 40210301.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513137 + ... + 2513152.

Almost surely, 2^40210312 is an apocalyptic number.

It is an amenable number.

40210312 is a deficient number, since it is larger than the sum of its proper divisors (35184038).

40210312 is a wasteful number, since it uses less digits than its factorization.

40210312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5026295 (or 5026291 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 40210312 is about 6341.1601462193. The cubic root of 40210312 is about 342.5935226872.

Adding to 40210312 its reverse (21301204), we get a palindrome (61511516).

The spelling of 40210312 in words is "forty million, two hundred ten thousand, three hundred twelve".