121331310031 has 8 divisors (see below), whose sum is σ = 121419429120. Its totient is φ = 121243225752.

The previous prime is 121331310017. The next prime is 121331310041. The reversal of 121331310031 is 130013133121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121331310031 - 2⁷ = 121331309903 is a prime.

It is a super-2 number, since 2×121331310031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121331309990 and 121331310008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121331310041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12876840 + ... + 12886258.

It is an arithmetic number, because the mean of its divisors is an integer number (15177428640).

Almost surely, 2^121331310031 is an apocalyptic number.

121331310031 is a deficient number, since it is larger than the sum of its proper divisors (88119089).

121331310031 is an equidigital number, since it uses as much as digits as its factorization.

121331310031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17405.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 121331310031 its reverse (130013133121), we get a palindrome (251344443152).

The spelling of 121331310031 in words is "one hundred twenty-one billion, three hundred thirty-one million, three hundred ten thousand, thirty-one".