101731481 has 2 divisors, whose sum is σ = 101731482. Its totient is φ = 101731480.

The previous prime is 101731477. The next prime is 101731489. The reversal of 101731481 is 184137101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59598400 + 42133081 = 7720^2 + 6491^2 .

It is a cyclic number.

It is not a de Polignac number, because 101731481 - 2² = 101731477 is a prime.

It is a super-2 number, since 2×101731481² = 20698588452906722, which contains 22 as substring.

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 101731481.

It is not a weakly prime, because it can be changed into another prime (101731489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50865740 + 50865741.

It is an arithmetic number, because the mean of its divisors is an integer number (50865741).

Almost surely, 2^101731481 is an apocalyptic number.

It is an amenable number.

101731481 is a deficient number, since it is larger than the sum of its proper divisors (1).

101731481 is an equidigital number, since it uses as much as digits as its factorization.

101731481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 101731481 is about 10086.2025063946. The cubic root of 101731481 is about 466.8225095719.

Adding to 101731481 its reverse (184137101), we get a palindrome (285868582).

The spelling of 101731481 in words is "one hundred one million, seven hundred thirty-one thousand, four hundred eighty-one".