31203033203413 has 4 divisors (see below), whose sum is σ = 31203245631820. Its totient is φ = 31202820775008.

The previous prime is 31203033203401. The next prime is 31203033203437. The reversal of 31203033203413 is 31430233030213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16731224905924 + 14471808297489 = 4090382^2 + 3804183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31203033203413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31203033201413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105993720 + ... + 106287697.

It is an arithmetic number, because the mean of its divisors is an integer number (7800811407955).

Almost surely, 2^{31203033203413} is an apocalyptic number.

It is an amenable number.

31203033203413 is a deficient number, since it is larger than the sum of its proper divisors (212428407).

31203033203413 is a wasteful number, since it uses less digits than its factorization.

31203033203413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212428406.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 31203033203413 its reverse (31430233030213), we get a palindrome (62633266233626).

The spelling of 31203033203413 in words is "thirty-one trillion, two hundred three billion, thirty-three million, two hundred three thousand, four hundred thirteen".