103131101 has 2 divisors, whose sum is σ = 103131102. Its totient is φ = 103131100.

The previous prime is 103131097. The next prime is 103131137. The reversal of 103131101 is 101131301.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76143076 + 26988025 = 8726^2 + 5195^2 .

It is an emirp because it is prime and its reverse (101131301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103131101 - 2² = 103131097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103131181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51565550 + 51565551.

It is an arithmetic number, because the mean of its divisors is an integer number (51565551).

Almost surely, 2^103131101 is an apocalyptic number.

It is an amenable number.

103131101 is a deficient number, since it is larger than the sum of its proper divisors (1).

103131101 is an equidigital number, since it uses as much as digits as its factorization.

103131101 is an evil number, because the sum of its binary digits is even.

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

The square root of 103131101 is about 10155.3483938268. The cubic root of 103131101 is about 468.9536114317.

Adding to 103131101 its reverse (101131301), we get a palindrome (204262402).

The spelling of 103131101 in words is "one hundred three million, one hundred thirty-one thousand, one hundred one".