9640131 has 4 divisors (see below), whose sum is σ = 12853512. Its totient is φ = 6426752.

The previous prime is 9640129. The next prime is 9640171. The reversal of 9640131 is 1310469.

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

It is a cyclic number.

It is not a de Polignac number, because 9640131 - 2¹ = 9640129 is a prime.

It is a super-2 number, since 2×9640131² = 185864251394322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9640121) 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, 1606686 + ... + 1606691.

It is an arithmetic number, because the mean of its divisors is an integer number (3213378).

Almost surely, 2^9640131 is an apocalyptic number.

9640131 is a deficient number, since it is larger than the sum of its proper divisors (3213381).

9640131 is a wasteful number, since it uses less digits than its factorization.

9640131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213380.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 9640131 is about 3104.8560353098. The cubic root of 9640131 is about 212.8274517862.

The spelling of 9640131 in words is "nine million, six hundred forty thousand, one hundred thirty-one".