7381431 has 12 divisors (see below), whose sum is σ = 10843560. Its totient is φ = 4837200.

The previous prime is 7381411. The next prime is 7381433. The reversal of 7381431 is 1341837.

7381431 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7381431 - 2¹⁴ = 7365047 is a prime.

It is a super-2 number, since 2×7381431² = 108971047215522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7381395 and 7381404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7381433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6420 + ... + 7481.

It is an arithmetic number, because the mean of its divisors is an integer number (903630).

Almost surely, 2^7381431 is an apocalyptic number.

7381431 is a deficient number, since it is larger than the sum of its proper divisors (3462129).

7381431 is a wasteful number, since it uses less digits than its factorization.

7381431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13966 (or 13963 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 7381431 is about 2716.8789078647. The cubic root of 7381431 is about 194.7063825708.

The spelling of 7381431 in words is "seven million, three hundred eighty-one thousand, four hundred thirty-one".