99701531 has 4 divisors (see below), whose sum is σ = 104949000. Its totient is φ = 94454064.

The previous prime is 99701519. The next prime is 99701543. The reversal of 99701531 is 13510799.

99701531 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (99701519) and next prime (99701543).

It is a cyclic number.

It is not a de Polignac number, because 99701531 - 2¹⁴ = 99685147 is a prime.

It is a super-2 number, since 2×99701531² = 19880790567487922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99701491 and 99701500.

It is not an unprimeable number, because it can be changed into a prime (99701501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2623706 + ... + 2623743.

It is an arithmetic number, because the mean of its divisors is an integer number (26237250).

Almost surely, 2^99701531 is an apocalyptic number.

99701531 is a deficient number, since it is larger than the sum of its proper divisors (5247469).

99701531 is a wasteful number, since it uses less digits than its factorization.

99701531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5247468.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 99701531 is about 9985.0653978830. The cubic root of 99701531 is about 463.6966330386.

The spelling of 99701531 in words is "ninety-nine million, seven hundred one thousand, five hundred thirty-one".