40312051215 has 16 divisors (see below), whose sum is σ = 64855635936. Its totient is φ = 21380976000.

The previous prime is 40312051211. The next prime is 40312051231. The reversal of 40312051215 is 51215021304.

It is a happy number.

It is not a de Polignac number, because 40312051215 - 2² = 40312051211 is a prime.

It is a super-2 number, since 2×40312051215² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40312051211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7421236 + ... + 7426665.

It is an arithmetic number, because the mean of its divisors is an integer number (4053477246).

Almost surely, 2^40312051215 is an apocalyptic number.

40312051215 is a deficient number, since it is larger than the sum of its proper divisors (24543584721).

40312051215 is a wasteful number, since it uses less digits than its factorization.

40312051215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14848090.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 40312051215 its reverse (51215021304), we get a palindrome (91527072519).

The spelling of 40312051215 in words is "forty billion, three hundred twelve million, fifty-one thousand, two hundred fifteen".