103128207 has 32 divisors (see below), whose sum is σ = 170784768. Its totient is φ = 53899776.

The previous prime is 103128203. The next prime is 103128211. The reversal of 103128207 is 702821301.

It is an interprime number because it is at equal distance from previous prime (103128203) and next prime (103128211).

It is not a de Polignac number, because 103128207 - 2² = 103128203 is a prime.

It is a super-3 number, since 3×103128207³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103128203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29178 + ... + 32520.

It is an arithmetic number, because the mean of its divisors is an integer number (5337024).

Almost surely, 2^103128207 is an apocalyptic number.

103128207 is a deficient number, since it is larger than the sum of its proper divisors (67656561).

103128207 is a wasteful number, since it uses less digits than its factorization.

103128207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 103128207 is about 10155.2059063320. The cubic root of 103128207 is about 468.9492248970.

Adding to 103128207 its reverse (702821301), we get a palindrome (805949508).

The spelling of 103128207 in words is "one hundred three million, one hundred twenty-eight thousand, two hundred seven".