1236231 has 6 divisors (see below), whose sum is σ = 1785680. Its totient is φ = 824148.

The previous prime is 1236229. The next prime is 1236233. The reversal of 1236231 is 1326321.

1236231 = 124² + 125² + ... + 177².

It is an interprime number because it is at equal distance from previous prime (1236229) and next prime (1236233).

It is not a de Polignac number, because 1236231 - 2¹ = 1236229 is a prime.

It is a super-2 number, since 2×1236231² = 3056534170722, 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 (1236233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68671 + ... + 68688.

2^1236231 is an apocalyptic number.

1236231 is a deficient number, since it is larger than the sum of its proper divisors (549449).

1236231 is a wasteful number, since it uses less digits than its factorization.

1236231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137365 (or 137362 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 1236231 is about 1111.8592536828. The cubic root of 1236231 is about 107.3247478012.

The spelling of 1236231 in words is "one million, two hundred thirty-six thousand, two hundred thirty-one".