31020330121 has 8 divisors (see below), whose sum is σ = 33842592288. Its totient is φ = 28198440000.

The previous prime is 31020330109. The next prime is 31020330139. The reversal of 31020330121 is 12103302013.

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 31020330121 - 2³³ = 22430395529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31020330095 and 31020330104.

It is not an unprimeable number, because it can be changed into a prime (31020330521) 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, 98481 + ... + 267841.

It is an arithmetic number, because the mean of its divisors is an integer number (4230324036).

Almost surely, 2^31020330121 is an apocalyptic number.

It is an amenable number.

31020330121 is a deficient number, since it is larger than the sum of its proper divisors (2822262167).

31020330121 is a wasteful number, since it uses less digits than its factorization.

31020330121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186023.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31020330121 its reverse (12103302013), we get a palindrome (43123632134).

The spelling of 31020330121 in words is "thirty-one billion, twenty million, three hundred thirty thousand, one hundred twenty-one".