1214531 has 4 divisors (see below), whose sum is σ = 1285992. Its totient is φ = 1143072.

The previous prime is 1214519. The next prime is 1214533. The reversal of 1214531 is 1354121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1354121 = 331 ⋅4091.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214531 is a prime.

It is a super-2 number, since 2×1214531² = 2950171099922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 71443 = 1214531 / (1 + 2 + 1 + 4 + 5 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35705 + ... + 35738.

It is an arithmetic number, because the mean of its divisors is an integer number (321498).

2^1214531 is an apocalyptic number.

1214531 is a deficient number, since it is larger than the sum of its proper divisors (71461).

1214531 is an equidigital number, since it uses as much as digits as its factorization.

1214531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71460.

The product of its digits is 120, while the sum is 17.

The square root of 1214531 is about 1102.0576209981. The cubic root of 1214531 is about 106.6930674668.

Adding to 1214531 its reverse (1354121), we get a palindrome (2568652).

The spelling of 1214531 in words is "one million, two hundred fourteen thousand, five hundred thirty-one".