9931380371 has 4 divisors (see below), whose sum is σ = 10834233144. Its totient is φ = 9028527600.

The previous prime is 9931380359. The next prime is 9931380383. The reversal of 9931380371 is 1730831399.

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 (9931380359) and next prime (9931380383).

It is a cyclic number.

It is not a de Polignac number, because 9931380371 - 2²² = 9927186067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9931380391) 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, 451426370 + ... + 451426391.

It is an arithmetic number, because the mean of its divisors is an integer number (2708558286).

Almost surely, 2^9931380371 is an apocalyptic number.

9931380371 is a deficient number, since it is larger than the sum of its proper divisors (902852773).

9931380371 is a wasteful number, since it uses less digits than its factorization.

9931380371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902852772.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 9931380371 is about 99656.3112451991. The cubic root of 9931380371 is about 2149.4954915751.

The spelling of 9931380371 in words is "nine billion, nine hundred thirty-one million, three hundred eighty thousand, three hundred seventy-one".