102031613 has 2 divisors, whose sum is σ = 102031614. Its totient is φ = 102031612.

The previous prime is 102031609. The next prime is 102031649. The reversal of 102031613 is 316130201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86452804 + 15578809 = 9298^2 + 3947^2 .

It is a cyclic number.

It is not a de Polignac number, because 102031613 - 2² = 102031609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102031591 and 102031600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102031663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51015806 + 51015807.

It is an arithmetic number, because the mean of its divisors is an integer number (51015807).

Almost surely, 2^102031613 is an apocalyptic number.

It is an amenable number.

102031613 is a deficient number, since it is larger than the sum of its proper divisors (1).

102031613 is an equidigital number, since it uses as much as digits as its factorization.

102031613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 102031613 is about 10101.0698938281. The cubic root of 102031613 is about 467.2811378914.

Adding to 102031613 its reverse (316130201), we get a palindrome (418161814).

The spelling of 102031613 in words is "one hundred two million, thirty-one thousand, six hundred thirteen".