76431 has 8 divisors (see below), whose sum is σ = 103600. Its totient is φ = 50112.

The previous prime is 76423. The next prime is 76441. The reversal of 76431 is 13467.

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

It is not a de Polignac number, because 76431 - 2³ = 76423 is a prime.

It is a super-2 number, since 2×76431² = 11683395522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 76398 and 76407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76421) 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, 45 + ... + 393.

It is an arithmetic number, because the mean of its divisors is an integer number (12950).

2⁷⁶⁴³¹ is an apocalyptic number.

76431 is a deficient number, since it is larger than the sum of its proper divisors (27169).

76431 is a wasteful number, since it uses less digits than its factorization.

76431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425.

The product of its digits is 504, while the sum is 21.

The square root of 76431 is about 276.4615705663. The cubic root of 76431 is about 42.4381568819.

Adding to 76431 its reverse (13467), we get a palindrome (89898).

The spelling of 76431 in words is "seventy-six thousand, four hundred thirty-one".