31132312013 has 8 divisors (see below), whose sum is σ = 34298786016. Its totient is φ = 28021882000.

The previous prime is 31132311953. The next prime is 31132312033. The reversal of 31132312013 is 31021323113.

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

It is a cyclic number.

It is not a de Polignac number, because 31132312013 - 2¹² = 31132307917 is a prime.

It is a super-3 number, since 3×31132312013³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31132312033) 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, 14009831 + ... + 14012052.

It is an arithmetic number, because the mean of its divisors is an integer number (4287348252).

Almost surely, 2^31132312013 is an apocalyptic number.

It is an amenable number.

31132312013 is a deficient number, since it is larger than the sum of its proper divisors (3166474003).

31132312013 is a wasteful number, since it uses less digits than its factorization.

31132312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28021995.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31132312013 its reverse (31021323113), we get a palindrome (62153635126).

The spelling of 31132312013 in words is "thirty-one billion, one hundred thirty-two million, three hundred twelve thousand, thirteen".