31020133213001 has 4 divisors (see below), whose sum is σ = 31020264395652. Its totient is φ = 31020002030352.

The previous prime is 31020133212997. The next prime is 31020133213057. The reversal of 31020133213001 is 10031233102013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5014733209600 + 26005400003401 = 2239360^2 + 5099549^2 .

It is a cyclic number.

It is not a de Polignac number, because 31020133213001 - 2² = 31020133212997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31020133413001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65235986 + ... + 65709771.

It is an arithmetic number, because the mean of its divisors is an integer number (7755066098913).

Almost surely, 2^{31020133213001} is an apocalyptic number.

It is an amenable number.

31020133213001 is a deficient number, since it is larger than the sum of its proper divisors (131182651).

31020133213001 is a wasteful number, since it uses less digits than its factorization.

31020133213001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131182650.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31020133213001 its reverse (10031233102013), we get a palindrome (41051366315014).

The spelling of 31020133213001 in words is "thirty-one trillion, twenty billion, one hundred thirty-three million, two hundred thirteen thousand, one".