40403121124231 has 4 divisors (see below), whose sum is σ = 40403190156952. Its totient is φ = 40403052091512.

The previous prime is 40403121124183. The next prime is 40403121124273. The reversal of 40403121124231 is 13242112130404.

It is a happy number.

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 40403121124231 - 2¹¹ = 40403121122183 is a prime.

It is a super-2 number, since 2×40403121124231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40403121124231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40403121124291) 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, 33630876 + ... + 34811521.

It is an arithmetic number, because the mean of its divisors is an integer number (10100797539238).

Almost surely, 2^{40403121124231} is an apocalyptic number.

40403121124231 is a deficient number, since it is larger than the sum of its proper divisors (69032721).

40403121124231 is an equidigital number, since it uses as much as digits as its factorization.

40403121124231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69032720.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 40403121124231 its reverse (13242112130404), we get a palindrome (53645233254635).

The spelling of 40403121124231 in words is "forty trillion, four hundred three billion, one hundred twenty-one million, one hundred twenty-four thousand, two hundred thirty-one".