1231002 has 12 divisors (see below), whose sum is σ = 2667210. Its totient is φ = 410328.

The previous prime is 1231001. The next prime is 1231003. The reversal of 1231002 is 2001321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1231001) and next prime (1231003).

It can be written as a sum of positive squares in only one way, i.e., 881721 + 349281 = 939^2 + 591^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1231001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34177 + ... + 34212.

2^1231002 is an apocalyptic number.

1231002 is an abundant number, since it is smaller than the sum of its proper divisors (1436208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231002 is a wasteful number, since it uses less digits than its factorization.

1231002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68397 (or 68394 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1231002 is about 1109.5052951654. The cubic root of 1231002 is about 107.1732134937.

Adding to 1231002 its reverse (2001321), we get a palindrome (3232323).

The spelling of 1231002 in words is "one million, two hundred thirty-one thousand, two".