1255431 has 8 divisors (see below), whose sum is σ = 1689984. Its totient is φ = 828920.

The previous prime is 1255427. The next prime is 1255451. The reversal of 1255431 is 1345521.

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

It is a cyclic number.

It is not a de Polignac number, because 1255431 - 2² = 1255427 is a prime.

It is a super-2 number, since 2×1255431² = 3152213991522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1255398 and 1255407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255421) 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, 1635 + ... + 2276.

It is an arithmetic number, because the mean of its divisors is an integer number (211248).

2^1255431 is an apocalyptic number.

1255431 is a deficient number, since it is larger than the sum of its proper divisors (434553).

1255431 is a wasteful number, since it uses less digits than its factorization.

1255431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021.

The product of its digits is 600, while the sum is 21.

The square root of 1255431 is about 1120.4601733217. The cubic root of 1255431 is about 107.8775188990.

The spelling of 1255431 in words is "one million, two hundred fifty-five thousand, four hundred thirty-one".