31420521403435 has 4 divisors (see below), whose sum is σ = 37704625684128. Its totient is φ = 25136417122744.

The previous prime is 31420521403429. The next prime is 31420521403463. The reversal of 31420521403435 is 53430412502413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31420521403435 - 2¹³ = 31420521395243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31420521403394 and 31420521403403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3142052140339 + ... + 3142052140348.

It is an arithmetic number, because the mean of its divisors is an integer number (9426156421032).

Almost surely, 2^{31420521403435} is an apocalyptic number.

31420521403435 is a deficient number, since it is larger than the sum of its proper divisors (6284104280693).

31420521403435 is an equidigital number, since it uses as much as digits as its factorization.

31420521403435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6284104280692.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 31420521403435 its reverse (53430412502413), we get a palindrome (84850933905848).

The spelling of 31420521403435 in words is "thirty-one trillion, four hundred twenty billion, five hundred twenty-one million, four hundred three thousand, four hundred thirty-five".