103131011 has 4 divisors (see below), whose sum is σ = 107614992. Its totient is φ = 98647032.

The previous prime is 103130983. The next prime is 103131043. The reversal of 103131011 is 110131301.

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: 110131301 = 7 ⋅15733043.

It is a cyclic number.

It is not a de Polignac number, because 103131011 - 2¹⁰ = 103129987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103130983 and 103131001.

It is not an unprimeable number, because it can be changed into a prime (103131211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2241956 + ... + 2242001.

It is an arithmetic number, because the mean of its divisors is an integer number (26903748).

Almost surely, 2^103131011 is an apocalyptic number.

103131011 is a deficient number, since it is larger than the sum of its proper divisors (4483981).

103131011 is an equidigital number, since it uses as much as digits as its factorization.

103131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483980.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 103131011 is about 10155.3439626632. The cubic root of 103131011 is about 468.9534750169.

Adding to 103131011 its reverse (110131301), we get a palindrome (213262312).

The spelling of 103131011 in words is "one hundred three million, one hundred thirty-one thousand, eleven".