321121031031 has 12 divisors (see below), whose sum is σ = 466039792920. Its totient is φ = 213066085680.

The previous prime is 321121030973. The next prime is 321121031041. The reversal of 321121031031 is 130130121123.

321121031031 is a `hidden beast` number, since 321 + 1 + 2 + 1 + 0 + 310 + 31 = 666.

It is not a de Polignac number, because 321121031031 - 2⁷ = 321121030903 is a prime.

It is a super-2 number, since 2×321121031031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321121030995 and 321121031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321121031041) 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 11 ways as a sum of consecutive naturals, for example, 84548136 + ... + 84551933.

It is an arithmetic number, because the mean of its divisors is an integer number (38836649410).

Almost surely, 2^321121031031 is an apocalyptic number.

321121031031 is a deficient number, since it is larger than the sum of its proper divisors (144918761889).

321121031031 is a wasteful number, since it uses less digits than its factorization.

321121031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169100286 (or 169100283 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 321121031031 its reverse (130130121123), we get a palindrome (451251152154).

The spelling of 321121031031 in words is "three hundred twenty-one billion, one hundred twenty-one million, thirty-one thousand, thirty-one".