31371311653 has 8 divisors (see below), whose sum is σ = 34224838560. Its totient is φ = 28518049680.

The previous prime is 31371311627. The next prime is 31371311677. The reversal of 31371311653 is 35611317313.

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-31371311653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31371311603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244951 + ... + 350347.

It is an arithmetic number, because the mean of its divisors is an integer number (4278104820).

Almost surely, 2^31371311653 is an apocalyptic number.

It is an amenable number.

31371311653 is a deficient number, since it is larger than the sum of its proper divisors (2853526907).

31371311653 is a wasteful number, since it uses less digits than its factorization.

31371311653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132467.

The product of its digits is 17010, while the sum is 34.

Adding to 31371311653 its reverse (35611317313), we get a palindrome (66982628966).

The spelling of 31371311653 in words is "thirty-one billion, three hundred seventy-one million, three hundred eleven thousand, six hundred fifty-three".