40120133231 has 4 divisors (see below), whose sum is σ = 40120563672. Its totient is φ = 40119702792.

The previous prime is 40120133227. The next prime is 40120133243. The reversal of 40120133231 is 13233102104.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40120133231 - 2² = 40120133227 is a prime.

It is a super-2 number, since 2×40120133231² (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 (40120133531) 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, 10496 + ... + 283461.

It is an arithmetic number, because the mean of its divisors is an integer number (10030140918).

Almost surely, 2^40120133231 is an apocalyptic number.

40120133231 is a deficient number, since it is larger than the sum of its proper divisors (430441).

40120133231 is a wasteful number, since it uses less digits than its factorization.

40120133231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430440.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 40120133231 its reverse (13233102104), we get a palindrome (53353235335).

The spelling of 40120133231 in words is "forty billion, one hundred twenty million, one hundred thirty-three thousand, two hundred thirty-one".