311032123121001 has 4 divisors (see below), whose sum is σ = 414709497494672. Its totient is φ = 207354748747332.

The previous prime is 311032123120991. The next prime is 311032123121011. The reversal of 311032123121001 is 100121321230113.

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 an interprime number because it is at equal distance from previous prime (311032123120991) and next prime (311032123121011).

It is not a de Polignac number, because 311032123121001 - 2⁹ = 311032123120489 is a prime.

It is a super-2 number, since 2×311032123121001² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311032123121011) 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, 51838687186831 + ... + 51838687186836.

It is an arithmetic number, because the mean of its divisors is an integer number (103677374373668).

Almost surely, 2^{311032123121001} is an apocalyptic number.

It is an amenable number.

311032123121001 is a deficient number, since it is larger than the sum of its proper divisors (103677374373671).

311032123121001 is a wasteful number, since it uses less digits than its factorization.

311032123121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103677374373670.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 311032123121001 its reverse (100121321230113), we get a palindrome (411153444351114).

The spelling of 311032123121001 in words is "three hundred eleven trillion, thirty-two billion, one hundred twenty-three million, one hundred twenty-one thousand, one".