40312423220 has 24 divisors (see below), whose sum is σ = 84672145824. Its totient is φ = 16121910816.

The previous prime is 40312423213. The next prime is 40312423231. The reversal of 40312423220 is 2232421304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81542 + ... + 295421.

It is an arithmetic number, because the mean of its divisors is an integer number (3528006076).

Almost surely, 2^40312423220 is an apocalyptic number.

It is an amenable number.

40312423220 is an abundant number, since it is smaller than the sum of its proper divisors (44359722604).

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

40312423220 is a wasteful number, since it uses less digits than its factorization.

40312423220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382319 (or 382317 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 40312423220 its reverse (2232421304), we get a palindrome (42544844524).

The spelling of 40312423220 in words is "forty billion, three hundred twelve million, four hundred twenty-three thousand, two hundred twenty".