31020013013201 has 4 divisors (see below), whose sum is σ = 32020658594304. Its totient is φ = 30019367432100.

The previous prime is 31020013013189. The next prime is 31020013013221. The reversal of 31020013013201 is 10231031002013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31020013013201 - 2⁶ = 31020013013137 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31020013013201.

It is not an unprimeable number, because it can be changed into a prime (31020013013221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500322790505 + ... + 500322790566.

It is an arithmetic number, because the mean of its divisors is an integer number (8005164648576).

Almost surely, 2^{31020013013201} is an apocalyptic number.

31020013013201 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31020013013201 is a deficient number, since it is larger than the sum of its proper divisors (1000645581103).

31020013013201 is a wasteful number, since it uses less digits than its factorization.

31020013013201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000645581102.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31020013013201 its reverse (10231031002013), we get a palindrome (41251044015214).

The spelling of 31020013013201 in words is "thirty-one trillion, twenty billion, thirteen million, thirteen thousand, two hundred one".