103020311 has 4 divisors (see below), whose sum is σ = 103041624. Its totient is φ = 102999000.

The previous prime is 103020283. The next prime is 103020317. The reversal of 103020311 is 113020301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 103020311 - 2¹⁸ = 102758167 is a prime.

It is a super-2 number, since 2×103020311² = 21226368957073442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103020292 and 103020301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103020317) 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, 461 + ... + 14361.

It is an arithmetic number, because the mean of its divisors is an integer number (25760406).

Almost surely, 2^103020311 is an apocalyptic number.

103020311 is a deficient number, since it is larger than the sum of its proper divisors (21313).

103020311 is an equidigital number, since it uses as much as digits as its factorization.

103020311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21312.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 103020311 is about 10149.8921669149. The cubic root of 103020311 is about 468.7856246466.

Adding to 103020311 its reverse (113020301), we get a palindrome (216040612).

The spelling of 103020311 in words is "one hundred three million, twenty thousand, three hundred eleven".