102431121 has 16 divisors (see below), whose sum is σ = 153476736. Its totient is φ = 60293376.

The previous prime is 102431111. The next prime is 102431123. The reversal of 102431121 is 121134201.

It is not a de Polignac number, because 102431121 - 2⁵ = 102431089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102431121.

It is not an unprimeable number, because it can be changed into a prime (102431123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56200 + ... + 57993.

It is an arithmetic number, because the mean of its divisors is an integer number (9592296).

Almost surely, 2^102431121 is an apocalyptic number.

It is an amenable number.

102431121 is a deficient number, since it is larger than the sum of its proper divisors (51045615).

102431121 is a wasteful number, since it uses less digits than its factorization.

102431121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114232.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 102431121 is about 10120.8261026460. The cubic root of 102431121 is about 467.8902282906.

Adding to 102431121 its reverse (121134201), we get a palindrome (223565322).

The spelling of 102431121 in words is "one hundred two million, four hundred thirty-one thousand, one hundred twenty-one".