9131401 has 4 divisors (see below), whose sum is σ = 9137812. Its totient is φ = 9124992.

The previous prime is 9131399. The next prime is 9131429. The reversal of 9131401 is 1041319.

It is a happy number.

9131401 is a nontrivial binomial coefficient, being equal to C(4274, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1041319 = 131 ⋅7949.

It can be written as a sum of positive squares in 2 ways, for example, as 1263376 + 7868025 = 1124^2 + 2805^2 .

It is a 3-Lehmer number, since φ(9131401) divides (9131401-1)³.

It is a cyclic number.

It is not a de Polignac number, because 9131401 - 2¹ = 9131399 is a prime.

9131401 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9131471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 4273.

It is an arithmetic number, because the mean of its divisors is an integer number (2284453).

It is a Poulet number, since it divides 2^9131400-1.

Almost surely, 2^9131401 is an apocalyptic number.

9131401 is the 4273-rd triangular number and also the 2137-th hexagonal number.

9131401 is the 1425-th centered nonagonal number.

It is an amenable number.

9131401 is a deficient number, since it is larger than the sum of its proper divisors (6411).

9131401 is a wasteful number, since it uses less digits than its factorization.

9131401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6410.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 9131401 is about 3021.8208087178. The cubic root of 9131401 is about 209.0158104078.

The spelling of 9131401 in words is "nine million, one hundred thirty-one thousand, four hundred one".