31430133021403 has 2 divisors, whose sum is σ = 31430133021404. Its totient is φ = 31430133021402.

The previous prime is 31430133021389. The next prime is 31430133021437. The reversal of 31430133021403 is 30412033103413.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31430133021403 is a prime.

It is not a weakly prime, because it can be changed into another prime (31430133024403) 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 as a sum of consecutive naturals, namely, 15715066510701 + 15715066510702.

It is an arithmetic number, because the mean of its divisors is an integer number (15715066510702).

Almost surely, 2^{31430133021403} is an apocalyptic number.

31430133021403 is a deficient number, since it is larger than the sum of its proper divisors (1).

31430133021403 is an equidigital number, since it uses as much as digits as its factorization.

31430133021403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 31430133021403 its reverse (30412033103413), we get a palindrome (61842166124816).

The spelling of 31430133021403 in words is "thirty-one trillion, four hundred thirty billion, one hundred thirty-three million, twenty-one thousand, four hundred three".