1283431 has 8 divisors (see below), whose sum is σ = 1395200. Its totient is φ = 1176120.

The previous prime is 1283417. The next prime is 1283437. The reversal of 1283431 is 1343821.

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 1283431 - 2¹¹ = 1281383 is a prime.

It is a super-2 number, since 2×1283431² = 3294390263522, 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 (1283437) 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, 501 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (174400).

2^1283431 is an apocalyptic number.

1283431 is the 717-th centered pentagonal number.

1283431 is a deficient number, since it is larger than the sum of its proper divisors (111769).

1283431 is a wasteful number, since it uses less digits than its factorization.

1283431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229.

The product of its digits is 576, while the sum is 22.

The square root of 1283431 is about 1132.8861372618. The cubic root of 1283431 is about 108.6736302679.

The spelling of 1283431 in words is "one million, two hundred eighty-three thousand, four hundred thirty-one".