31201133313 has 8 divisors (see below), whose sum is σ = 47544584128. Its totient is φ = 17829219024.

The previous prime is 31201133273. The next prime is 31201133317. The reversal of 31201133313 is 31333110213.

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

It is not a de Polignac number, because 31201133313 - 2⁸ = 31201133057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1485768253 = 31201133313 / (3 + 1 + 2 + 0 + 1 + 1 + 3 + 3 + 3 + 1 + 3).

It is a Duffinian number.

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 31201133313.

It is not an unprimeable number, because it can be changed into a prime (31201133317) 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, 742884106 + ... + 742884147.

It is an arithmetic number, because the mean of its divisors is an integer number (5943073016).

Almost surely, 2^31201133313 is an apocalyptic number.

It is an amenable number.

31201133313 is a deficient number, since it is larger than the sum of its proper divisors (16343450815).

31201133313 is a wasteful number, since it uses less digits than its factorization.

31201133313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485768263.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31201133313 its reverse (31333110213), we get a palindrome (62534243526).

The spelling of 31201133313 in words is "thirty-one billion, two hundred one million, one hundred thirty-three thousand, three hundred thirteen".