40345111331 has 24 divisors (see below), whose sum is σ = 49990512096. Its totient is φ = 32352311040.

The previous prime is 40345111321. The next prime is 40345111349. The reversal of 40345111331 is 13311154304.

It is not a de Polignac number, because 40345111331 - 2¹⁰ = 40345110307 is a prime.

It is a super-2 number, since 2×40345111331² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40345111331.

It is not an unprimeable number, because it can be changed into a prime (40345111321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5900 + ... + 284121.

It is an arithmetic number, because the mean of its divisors is an integer number (2082938004).

Almost surely, 2^40345111331 is an apocalyptic number.

40345111331 is a deficient number, since it is larger than the sum of its proper divisors (9645400765).

40345111331 is a wasteful number, since it uses less digits than its factorization.

40345111331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290219 (or 290212 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 40345111331 its reverse (13311154304), we get a palindrome (53656265635).

The spelling of 40345111331 in words is "forty billion, three hundred forty-five million, one hundred eleven thousand, three hundred thirty-one".