7681431 has 8 divisors (see below), whose sum is σ = 10341760. Its totient is φ = 5071032.

The previous prime is 7681417. The next prime is 7681489. The reversal of 7681431 is 1341867.

It is a happy number.

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

It is not a de Polignac number, because 7681431 - 2⁶ = 7681367 is a prime.

It is a super-2 number, since 2×7681431² = 118008764415522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7681411) 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, 12121 + ... + 12738.

It is an arithmetic number, because the mean of its divisors is an integer number (1292720).

Almost surely, 2^7681431 is an apocalyptic number.

7681431 is a deficient number, since it is larger than the sum of its proper divisors (2660329).

7681431 is a wasteful number, since it uses less digits than its factorization.

7681431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24965.

The product of its digits is 4032, while the sum is 30.

The square root of 7681431 is about 2771.5394639081. The cubic root of 7681431 is about 197.3092191767.

The spelling of 7681431 in words is "seven million, six hundred eighty-one thousand, four hundred thirty-one".