31130102121 has 8 divisors (see below), whose sum is σ = 41513857920. Its totient is φ = 20749873872.

The previous prime is 31130102089. The next prime is 31130102137. The reversal of 31130102121 is 12120103113.

It is a happy number.

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

It is not a de Polignac number, because 31130102121 - 2⁵ = 31130102089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31130102121.

It is not an unprimeable number, because it can be changed into a prime (31130102141) 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, 861226 + ... + 896643.

It is an arithmetic number, because the mean of its divisors is an integer number (5189232240).

Almost surely, 2^31130102121 is an apocalyptic number.

It is an amenable number.

31130102121 is a deficient number, since it is larger than the sum of its proper divisors (10383755799).

31130102121 is a wasteful number, since it uses less digits than its factorization.

31130102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763775.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31130102121 its reverse (12120103113), we get a palindrome (43250205234).

The spelling of 31130102121 in words is "thirty-one billion, one hundred thirty million, one hundred two thousand, one hundred twenty-one".