31211003131013 has 8 divisors (see below), whose sum is σ = 33101904961536. Its totient is φ = 29364593108400.

The previous prime is 31211003131001. The next prime is 31211003131027. The reversal of 31211003131013 is 31013130011213.

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 31211003131013 - 2⁶ = 31211003130949 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 (31211003131043) 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, 11122950533 + ... + 11122953338.

It is an arithmetic number, because the mean of its divisors is an integer number (4137738120192).

Almost surely, 2^{31211003131013} is an apocalyptic number.

It is an amenable number.

31211003131013 is a deficient number, since it is larger than the sum of its proper divisors (1890901830523).

31211003131013 is a wasteful number, since it uses less digits than its factorization.

31211003131013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22245903955.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 31211003131013 its reverse (31013130011213), we get a palindrome (62224133142226).

The spelling of 31211003131013 in words is "thirty-one trillion, two hundred eleven billion, three million, one hundred thirty-one thousand, thirteen".