103228511 has 4 divisors (see below), whose sum is σ = 104472312. Its totient is φ = 101984712.

The previous prime is 103228457. The next prime is 103228523. The reversal of 103228511 is 115822301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115822301 = 7 ⋅16546043.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103228511 is a prime.

It is a super-2 number, since 2×103228511² = 21312250966554242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103228561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621776 + ... + 621941.

It is an arithmetic number, because the mean of its divisors is an integer number (26118078).

Almost surely, 2^103228511 is an apocalyptic number.

103228511 is a deficient number, since it is larger than the sum of its proper divisors (1243801).

103228511 is an equidigital number, since it uses as much as digits as its factorization.

103228511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243800.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 103228511 is about 10160.1432568640. The cubic root of 103228511 is about 469.1012112542.

The spelling of 103228511 in words is "one hundred three million, two hundred twenty-eight thousand, five hundred eleven".