10391131 has 8 divisors (see below), whose sum is σ = 11055744. Its totient is φ = 9732480.

The previous prime is 10391093. The next prime is 10391137. The reversal of 10391131 is 13119301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10391131 - 2¹⁷ = 10260059 is a prime.

It is a super-2 number, since 2×10391131² = 215951206918322, 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 = 10391099 and 10391108.

It is not an unprimeable number, because it can be changed into a prime (10391137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2421 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (1381968).

Almost surely, 2^10391131 is an apocalyptic number.

10391131 is a deficient number, since it is larger than the sum of its proper divisors (664613).

10391131 is a wasteful number, since it uses less digits than its factorization.

10391131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 10391131 is about 3223.5277259549. The cubic root of 10391131 is about 218.2165104819.

The spelling of 10391131 in words is "ten million, three hundred ninety-one thousand, one hundred thirty-one".