40154442331 has 4 divisors (see below), whose sum is σ = 40568405752. Its totient is φ = 39740478912.

The previous prime is 40154442329. The next prime is 40154442343. The reversal of 40154442331 is 13324445104.

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 40154442331 - 2¹ = 40154442329 is a prime.

It is a super-2 number, since 2×40154442331² (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 = 40154442293 and 40154442302.

It is not an unprimeable number, because it can be changed into a prime (40154442131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206981565 + ... + 206981758.

It is an arithmetic number, because the mean of its divisors is an integer number (10142101438).

Almost surely, 2^40154442331 is an apocalyptic number.

40154442331 is a deficient number, since it is larger than the sum of its proper divisors (413963421).

40154442331 is an equidigital number, since it uses as much as digits as its factorization.

40154442331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413963420.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 40154442331 its reverse (13324445104), we get a palindrome (53478887435).

The spelling of 40154442331 in words is "forty billion, one hundred fifty-four million, four hundred forty-two thousand, three hundred thirty-one".