958431 has 4 divisors (see below), whose sum is σ = 1277912. Its totient is φ = 638952.

The previous prime is 958423. The next prime is 958439. The reversal of 958431 is 134859.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134859 = 3 ⋅44953.

It is an interprime number because it is at equal distance from previous prime (958423) and next prime (958439).

It is not a de Polignac number, because 958431 - 2³ = 958423 is a prime.

It is a super-2 number, since 2×958431² = 1837179963522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

958431 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 958431.

It is not an unprimeable number, because it can be changed into a prime (958439) 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, 159736 + ... + 159741.

It is an arithmetic number, because the mean of its divisors is an integer number (319478).

2⁹⁵⁸⁴³¹ is an apocalyptic number.

958431 is a deficient number, since it is larger than the sum of its proper divisors (319481).

958431 is a wasteful number, since it uses less digits than its factorization.

958431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319480.

The product of its digits is 4320, while the sum is 30.

The square root of 958431 is about 978.9948927344. The cubic root of 958431 is about 98.5947107965.

The spelling of 958431 in words is "nine hundred fifty-eight thousand, four hundred thirty-one".