31430133021405 has 16 divisors (see below), whose sum is σ = 51910413249024. Its totient is φ = 16222004139840.

The previous prime is 31430133021403. The next prime is 31430133021437. The reversal of 31430133021405 is 50412033103413.

It is a happy number.

It is not a de Polignac number, because 31430133021405 - 2¹ = 31430133021403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430133021403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33795841494 + ... + 33795842423.

It is an arithmetic number, because the mean of its divisors is an integer number (3244400828064).

Almost surely, 2^{31430133021405} is an apocalyptic number.

It is an amenable number.

31430133021405 is a deficient number, since it is larger than the sum of its proper divisors (20480280227619).

31430133021405 is a wasteful number, since it uses less digits than its factorization.

31430133021405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67591683956.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 31430133021405 its reverse (50412033103413), we get a palindrome (81842166124818).

The spelling of 31430133021405 in words is "thirty-one trillion, four hundred thirty billion, one hundred thirty-three million, twenty-one thousand, four hundred five".