40240100431 has 4 divisors (see below), whose sum is σ = 40271031864. Its totient is φ = 40209169000.

The previous prime is 40240100389. The next prime is 40240100447. The reversal of 40240100431 is 13400104204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40240100431 - 2¹¹ = 40240098383 is a prime.

It is a super-2 number, since 2×40240100431² (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 = 40240100399 and 40240100408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40240101431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15463765 + ... + 15466366.

It is an arithmetic number, because the mean of its divisors is an integer number (10067757966).

Almost surely, 2^40240100431 is an apocalyptic number.

40240100431 is a deficient number, since it is larger than the sum of its proper divisors (30931433).

40240100431 is a wasteful number, since it uses less digits than its factorization.

40240100431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30931432.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 40240100431 its reverse (13400104204), we get a palindrome (53640204635).

The spelling of 40240100431 in words is "forty billion, two hundred forty million, one hundred thousand, four hundred thirty-one".