40201205231 has 4 divisors (see below), whose sum is σ = 43855860264. Its totient is φ = 36546550200.

The previous prime is 40201205227. The next prime is 40201205251. The reversal of 40201205231 is 13250210204.

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 40201205231 - 2² = 40201205227 is a prime.

It is a super-2 number, since 2×40201205231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40201205251) 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, 1827327500 + ... + 1827327521.

It is an arithmetic number, because the mean of its divisors is an integer number (10963965066).

Almost surely, 2^40201205231 is an apocalyptic number.

40201205231 is a deficient number, since it is larger than the sum of its proper divisors (3654655033).

40201205231 is a wasteful number, since it uses less digits than its factorization.

40201205231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654655032.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 40201205231 its reverse (13250210204), we get a palindrome (53451415435).

The spelling of 40201205231 in words is "forty billion, two hundred one million, two hundred five thousand, two hundred thirty-one".