31133131013 has 8 divisors (see below), whose sum is σ = 31593194496. Its totient is φ = 30673666800.

The previous prime is 31133130983. The next prime is 31133131027. The reversal of 31133131013 is 31013133113.

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 31133131013 - 2¹⁸ = 31132868869 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 (31133131313) 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, 44606 + ... + 253487.

It is an arithmetic number, because the mean of its divisors is an integer number (3949149312).

Almost surely, 2^31133131013 is an apocalyptic number.

It is an amenable number.

31133131013 is a deficient number, since it is larger than the sum of its proper divisors (460063483).

31133131013 is a wasteful number, since it uses less digits than its factorization.

31133131013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299635.

The product of its (nonzero) digits is 243, while the sum is 20.

Adding to 31133131013 its reverse (31013133113), we get a palindrome (62146264126).

The spelling of 31133131013 in words is "thirty-one billion, one hundred thirty-three million, one hundred thirty-one thousand, thirteen".