4155431 has 4 divisors (see below), whose sum is σ = 4749072. Its totient is φ = 3561792.

The previous prime is 4155427. The next prime is 4155467. The reversal of 4155431 is 1345514.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1345514 = 2 ⋅672757.

It is a cyclic number.

It is not a de Polignac number, because 4155431 - 2² = 4155427 is a prime.

It is a super-2 number, since 2×4155431² = 34535213591522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4155397 and 4155406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4155401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296810 + ... + 296823.

It is an arithmetic number, because the mean of its divisors is an integer number (1187268).

Almost surely, 2^4155431 is an apocalyptic number.

4155431 is a deficient number, since it is larger than the sum of its proper divisors (593641).

4155431 is an equidigital number, since it uses as much as digits as its factorization.

4155431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593640.

The product of its digits is 1200, while the sum is 23.

The square root of 4155431 is about 2038.4874294437. The cubic root of 4155431 is about 160.7701283381.

The spelling of 4155431 in words is "four million, one hundred fifty-five thousand, four hundred thirty-one".