103020031 has 4 divisors (see below), whose sum is σ = 103072032. Its totient is φ = 102968032.

The previous prime is 103020023. The next prime is 103020041. The reversal of 103020031 is 130020301.

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 103020031 - 2³ = 103020023 is a prime.

It is a super-2 number, since 2×103020031² = 21226253574481922, 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 (103020011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22906 + ... + 27031.

It is an arithmetic number, because the mean of its divisors is an integer number (25768008).

Almost surely, 2^103020031 is an apocalyptic number.

103020031 is a deficient number, since it is larger than the sum of its proper divisors (52001).

103020031 is an equidigital number, since it uses as much as digits as its factorization.

103020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52000.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 103020031 is about 10149.8783736555. The cubic root of 103020031 is about 468.7851999404.

Adding to 103020031 its reverse (130020301), we get a palindrome (233040332).

The spelling of 103020031 in words is "one hundred three million, twenty thousand, thirty-one".