40121011231 has 16 divisors (see below), whose sum is σ = 46519038720. Its totient is φ = 33892119360.

The previous prime is 40121011207. The next prime is 40121011267. The reversal of 40121011231 is 13211012104.

40121011231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40121011231 - 2⁷ = 40121011103 is a prime.

It is a super-2 number, since 2×40121011231² (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 (40121071231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86376 + ... + 296146.

It is an arithmetic number, because the mean of its divisors is an integer number (2907439920).

Almost surely, 2^40121011231 is an apocalyptic number.

40121011231 is a deficient number, since it is larger than the sum of its proper divisors (6398027489).

40121011231 is a wasteful number, since it uses less digits than its factorization.

40121011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210174.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 40121011231 its reverse (13211012104), we get a palindrome (53332023335).

The spelling of 40121011231 in words is "forty billion, one hundred twenty-one million, eleven thousand, two hundred thirty-one".