1617230121 has 24 divisors (see below), whose sum is σ = 2369835360. Its totient is φ = 980343936.

The previous prime is 1617230071. The next prime is 1617230137. The reversal of 1617230121 is 1210327161.

It is not a de Polignac number, because 1617230121 - 2¹⁷ = 1617099049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1617230091 and 1617230100.

It is not an unprimeable number, because it can be changed into a prime (1617230161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10165 + ... + 57773.

It is an arithmetic number, because the mean of its divisors is an integer number (98743140).

Almost surely, 2^1617230121 is an apocalyptic number.

It is an amenable number.

1617230121 is a deficient number, since it is larger than the sum of its proper divisors (752605239).

1617230121 is a wasteful number, since it uses less digits than its factorization.

1617230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47705 (or 47692 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1617230121 is about 40214.7997757045. The cubic root of 1617230121 is about 1173.7905456999.

Adding to 1617230121 its reverse (1210327161), we get a palindrome (2827557282).

The spelling of 1617230121 in words is "one billion, six hundred seventeen million, two hundred thirty thousand, one hundred twenty-one".