101430491 has 2 divisors, whose sum is σ = 101430492. Its totient is φ = 101430490.

The previous prime is 101430457. The next prime is 101430503. The reversal of 101430491 is 194034101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101430491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101430401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50715245 + 50715246.

It is an arithmetic number, because the mean of its divisors is an integer number (50715246).

Almost surely, 2^101430491 is an apocalyptic number.

101430491 is a deficient number, since it is larger than the sum of its proper divisors (1).

101430491 is an equidigital number, since it uses as much as digits as its factorization.

101430491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 101430491 is about 10071.2705752551. The cubic root of 101430491 is about 466.3616633415.

Adding to 101430491 its reverse (194034101), we get a palindrome (295464592).

The spelling of 101430491 in words is "one hundred one million, four hundred thirty thousand, four hundred ninety-one".