31350431353 has 8 divisors (see below), whose sum is σ = 32433697800. Its totient is φ = 30267312768.

The previous prime is 31350431339. The next prime is 31350431389. The reversal of 31350431353 is 35313405313.

It can be written as a sum of positive squares in 4 ways, for example, as 1619016169 + 29731415184 = 40237^2 + 172428^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31350431353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31350431393) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 555675 + ... + 609487.

It is an arithmetic number, because the mean of its divisors is an integer number (4054212225).

Almost surely, 2^31350431353 is an apocalyptic number.

It is an amenable number.

31350431353 is a deficient number, since it is larger than the sum of its proper divisors (1083266447).

31350431353 is a wasteful number, since it uses less digits than its factorization.

31350431353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73931.

The product of its (nonzero) digits is 24300, while the sum is 31.

Adding to 31350431353 its reverse (35313405313), we get a palindrome (66663836666).

The spelling of 31350431353 in words is "thirty-one billion, three hundred fifty million, four hundred thirty-one thousand, three hundred fifty-three".