31213001232013 has 8 divisors (see below), whose sum is σ = 32857039759520. Its totient is φ = 29569087603440.

The previous prime is 31213001232011. The next prime is 31213001232029. The reversal of 31213001232013 is 31023210031213.

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 31213001232013 - 2¹ = 31213001232011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213001232011) 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, 30711543 + ... + 31711588.

It is an arithmetic number, because the mean of its divisors is an integer number (4107129969940).

Almost surely, 2^{31213001232013} is an apocalyptic number.

It is an amenable number.

31213001232013 is a deficient number, since it is larger than the sum of its proper divisors (1644038527507).

31213001232013 is a wasteful number, since it uses less digits than its factorization.

31213001232013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62449467.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31213001232013 its reverse (31023210031213), we get a palindrome (62236211263226).

The spelling of 31213001232013 in words is "thirty-one trillion, two hundred thirteen billion, one million, two hundred thirty-two thousand, thirteen".