40312412 has 12 divisors (see below), whose sum is σ = 80624880. Its totient is φ = 17276736.

The previous prime is 40312403. The next prime is 40312421. The reversal of 40312412 is 21421304.

It is an interprime number because it is at equal distance from previous prime (40312403) and next prime (40312421).

40312412 is an admirable number.

It is a super-2 number, since 2×40312412² = 3250181122515488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719837 + ... + 719892.

It is an arithmetic number, because the mean of its divisors is an integer number (6718740).

Almost surely, 2^40312412 is an apocalyptic number.

It is an amenable number.

40312412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40312412 is a wasteful number, since it uses less digits than its factorization.

40312412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439740 (or 1439738 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40312412 is about 6349.2056196031. The cubic root of 40312412 is about 342.8832430197.

Adding to 40312412 its reverse (21421304), we get a palindrome (61733716).

The spelling of 40312412 in words is "forty million, three hundred twelve thousand, four hundred twelve".