40020343312 has 10 divisors (see below), whose sum is σ = 77539415198. Its totient is φ = 20010171648.

The previous prime is 40020343291. The next prime is 40020343333. The reversal of 40020343312 is 21334302004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40020343291) and next prime (40020343333).

It can be written as a sum of positive squares in only one way, i.e., 39897665536 + 122677776 = 199744^2 + 11076^2 .

It is a super-5 number, since 5×40020343312⁵ (a number of 54 digits) contains 55555 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250635713 + ... + 1250635744.

Almost surely, 2^40020343312 is an apocalyptic number.

It is an amenable number.

40020343312 is a deficient number, since it is larger than the sum of its proper divisors (37519071886).

40020343312 is a wasteful number, since it uses less digits than its factorization.

40020343312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501271465 (or 2501271459 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 40020343312 its reverse (21334302004), we get a palindrome (61354645316).

The spelling of 40020343312 in words is "forty billion, twenty million, three hundred forty-three thousand, three hundred twelve".