321230130031 has 4 divisors (see below), whose sum is σ = 338136979000. Its totient is φ = 304323281064.

The previous prime is 321230129959. The next prime is 321230130043. The reversal of 321230130031 is 130031032123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130031032123 = 140741 ⋅923903.

It is a cyclic number.

It is not a de Polignac number, because 321230130031 - 2¹⁵ = 321230097263 is a prime.

It is a super-2 number, since 2×321230130031² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 16906848949 = 321230130031 / (3 + 2 + 1 + 2 + 3 + 0 + 1 + 3 + 0 + 0 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321230129990 and 321230130008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321230130631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8453424456 + ... + 8453424493.

It is an arithmetic number, because the mean of its divisors is an integer number (84534244750).

Almost surely, 2^321230130031 is an apocalyptic number.

321230130031 is a deficient number, since it is larger than the sum of its proper divisors (16906848969).

321230130031 is a wasteful number, since it uses less digits than its factorization.

321230130031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16906848968.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 321230130031 its reverse (130031032123), we get a palindrome (451261162154).

The spelling of 321230130031 in words is "three hundred twenty-one billion, two hundred thirty million, one hundred thirty thousand, thirty-one".