103631831 has 2 divisors, whose sum is σ = 103631832. Its totient is φ = 103631830.

The previous prime is 103631809. The next prime is 103631861. The reversal of 103631831 is 138136301.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (138136301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103631831 is a prime.

It is a super-3 number, since 3×103631831³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103631831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103631861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51815915 + 51815916.

It is an arithmetic number, because the mean of its divisors is an integer number (51815916).

Almost surely, 2^103631831 is an apocalyptic number.

103631831 is a deficient number, since it is larger than the sum of its proper divisors (1).

103631831 is an equidigital number, since it uses as much as digits as its factorization.

103631831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 103631831 is about 10179.9720530068. The cubic root of 103631831 is about 469.7113528698.

The spelling of 103631831 in words is "one hundred three million, six hundred thirty-one thousand, eight hundred thirty-one".