1071431 has 4 divisors (see below), whose sum is σ = 1096392. Its totient is φ = 1046472.

The previous prime is 1071419. The next prime is 1071439. The reversal of 1071431 is 1341701.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1071431 is a prime.

It is a super-2 number, since 2×1071431² = 2295928775522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12416 + ... + 12501.

It is an arithmetic number, because the mean of its divisors is an integer number (274098).

2^1071431 is an apocalyptic number.

1071431 is a deficient number, since it is larger than the sum of its proper divisors (24961).

1071431 is an equidigital number, since it uses as much as digits as its factorization.

1071431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24960.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1071431 is about 1035.0995121243. The cubic root of 1071431 is about 102.3264881226.

The spelling of 1071431 in words is "one million, seventy-one thousand, four hundred thirty-one".