40021230031 has 2 divisors, whose sum is σ = 40021230032. Its totient is φ = 40021230030.

The previous prime is 40021229999. The next prime is 40021230037. The reversal of 40021230031 is 13003212004.

It is a happy number.

40021230031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40021230031 - 2⁵ = 40021229999 is a prime.

It is a super-2 number, since 2×40021230031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40021229987 and 40021230014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40021230037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20010615015 + 20010615016.

It is an arithmetic number, because the mean of its divisors is an integer number (20010615016).

Almost surely, 2^40021230031 is an apocalyptic number.

40021230031 is a deficient number, since it is larger than the sum of its proper divisors (1).

40021230031 is an equidigital number, since it uses as much as digits as its factorization.

40021230031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 40021230031 its reverse (13003212004), we get a palindrome (53024442035).

The spelling of 40021230031 in words is "forty billion, twenty-one million, two hundred thirty thousand, thirty-one".