31336642481 has 8 divisors (see below), whose sum is σ = 31525507584. Its totient is φ = 31148036080.

The previous prime is 31336642451. The next prime is 31336642499. The reversal of 31336642481 is 18424663313.

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-31336642481 is a prime.

It is a super-3 number, since 3×31336642481³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31336642451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181115 + ... + 308991.

It is an arithmetic number, because the mean of its divisors is an integer number (3940688448).

Almost surely, 2^31336642481 is an apocalyptic number.

It is an amenable number.

31336642481 is a deficient number, since it is larger than the sum of its proper divisors (188865103).

31336642481 is a wasteful number, since it uses less digits than its factorization.

31336642481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129351.

The product of its digits is 248832, while the sum is 41.

The spelling of 31336642481 in words is "thirty-one billion, three hundred thirty-six million, six hundred forty-two thousand, four hundred eighty-one".