40013442231 has 32 divisors (see below), whose sum is σ = 62959300608. Its totient is φ = 22120369920.

The previous prime is 40013442221. The next prime is 40013442233. The reversal of 40013442231 is 13224431004.

It is not a de Polignac number, because 40013442231 - 2¹¹ = 40013440183 is a prime.

It is a super-2 number, since 2×40013442231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40013442233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2657035 + ... + 2672051.

It is an arithmetic number, because the mean of its divisors is an integer number (1967478144).

Almost surely, 2^40013442231 is an apocalyptic number.

40013442231 is a deficient number, since it is larger than the sum of its proper divisors (22945858377).

40013442231 is a wasteful number, since it uses less digits than its factorization.

40013442231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19151.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 40013442231 its reverse (13224431004), we get a palindrome (53237873235).

The spelling of 40013442231 in words is "forty billion, thirteen million, four hundred forty-two thousand, two hundred thirty-one".