40321423231 has 8 divisors (see below), whose sum is σ = 41303584080. Its totient is φ = 39341283072.

The previous prime is 40321423223. The next prime is 40321423253. The reversal of 40321423231 is 13232412304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40321423231 - 2³ = 40321423223 is a prime.

It is a super-2 number, since 2×40321423231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40321423196 and 40321423205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40321423291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464740 + ... + 544633.

It is an arithmetic number, because the mean of its divisors is an integer number (5162948010).

Almost surely, 2^40321423231 is an apocalyptic number.

40321423231 is a deficient number, since it is larger than the sum of its proper divisors (982160849).

40321423231 is a wasteful number, since it uses less digits than its factorization.

40321423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010345.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 40321423231 its reverse (13232412304), we get a palindrome (53553835535).

The spelling of 40321423231 in words is "forty billion, three hundred twenty-one million, four hundred twenty-three thousand, two hundred thirty-one".