1355431 has 16 divisors (see below), whose sum is σ = 1751040. Its totient is φ = 1018080.

The previous prime is 1355429. The next prime is 1355443. The reversal of 1355431 is 1345531.

It is a happy number.

It is not a de Polignac number, because 1355431 - 2¹ = 1355429 is a prime.

It is a super-2 number, since 2×1355431² = 3674386391522, which contains 22 as substring.

It is a Duffinian number.

1355431 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1930 + ... + 2536.

It is an arithmetic number, because the mean of its divisors is an integer number (109440).

2^1355431 is an apocalyptic number.

1355431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1355431 is a deficient number, since it is larger than the sum of its proper divisors (395609).

1355431 is a wasteful number, since it uses less digits than its factorization.

1355431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654.

The product of its digits is 900, while the sum is 22.

The square root of 1355431 is about 1164.2297883150. The cubic root of 1355431 is about 110.6689538809.

Subtracting from 1355431 its product of digits (900), we obtain a palindrome (1354531).

The spelling of 1355431 in words is "one million, three hundred fifty-five thousand, four hundred thirty-one".