5181431 has 2 divisors, whose sum is σ = 5181432. Its totient is φ = 5181430.

The previous prime is 5181391. The next prime is 5181469. The reversal of 5181431 is 1341815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5181431 - 2²² = 987127 is a prime.

It is a super-2 number, since 2×5181431² = 53694454415522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5181397 and 5181406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5141431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2590715 + 2590716.

It is an arithmetic number, because the mean of its divisors is an integer number (2590716).

Almost surely, 2^5181431 is an apocalyptic number.

5181431 is a deficient number, since it is larger than the sum of its proper divisors (1).

5181431 is an equidigital number, since it uses as much as digits as its factorization.

5181431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 23.

The square root of 5181431 is about 2276.2756862911. The cubic root of 5181431 is about 173.0413546764.

The spelling of 5181431 in words is "five million, one hundred eighty-one thousand, four hundred thirty-one".