913431 has 4 divisors (see below), whose sum is σ = 1217912. Its totient is φ = 608952.

The previous prime is 913421. The next prime is 913433. The reversal of 913431 is 134319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134319 = 3 ⋅44773.

It is a de Polignac number, because none of the positive numbers 2^k-913431 is a prime.

It is a super-2 number, since 2×913431² = 1668712383522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 913398 and 913407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913433) 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, 152236 + ... + 152241.

It is an arithmetic number, because the mean of its divisors is an integer number (304478).

2⁹¹³⁴³¹ is an apocalyptic number.

913431 is a deficient number, since it is larger than the sum of its proper divisors (304481).

913431 is a wasteful number, since it uses less digits than its factorization.

913431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304480.

The product of its digits is 324, while the sum is 21.

The square root of 913431 is about 955.7358421656. The cubic root of 913431 is about 97.0268462908.

The spelling of 913431 in words is "nine hundred thirteen thousand, four hundred thirty-one".