31323101001001 has 4 divisors (see below), whose sum is σ = 32403207932100. Its totient is φ = 30242994069904.

The previous prime is 31323101000969. The next prime is 31323101001029. The reversal of 31323101001001 is 10010010132313.

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 22041475677225 + 9281625323776 = 4694835^2 + 3046576^2 .

It is a cyclic number.

It is not a de Polignac number, because 31323101001001 - 2⁵ = 31323101000969 is a prime.

It is a super-2 number, since 2×31323101001001² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31323101001301) 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, 540053465506 + ... + 540053465563.

It is an arithmetic number, because the mean of its divisors is an integer number (8100801983025).

Almost surely, 2^{31323101001001} is an apocalyptic number.

It is an amenable number.

31323101001001 is a deficient number, since it is larger than the sum of its proper divisors (1080106931099).

31323101001001 is a wasteful number, since it uses less digits than its factorization.

31323101001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080106931098.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31323101001001 its reverse (10010010132313), we get a palindrome (41333111133314).

The spelling of 31323101001001 in words is "thirty-one trillion, three hundred twenty-three billion, one hundred one million, one thousand, one".