1213251 has 12 divisors (see below), whose sum is σ = 1752408. Its totient is φ = 746304.

The previous prime is 1213241. The next prime is 1213253. The reversal of 1213251 is 1523121.

It is not a de Polignac number, because 1213251 - 2¹⁰ = 1212227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213251.

It is not an unprimeable number, because it can be changed into a prime (1213253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 690 + ... + 1703.

It is an arithmetic number, because the mean of its divisors is an integer number (146034).

2^1213251 is an apocalyptic number.

1213251 is a deficient number, since it is larger than the sum of its proper divisors (539157).

1213251 is a wasteful number, since it uses less digits than its factorization.

1213251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422 (or 2409 counting only the distinct ones).

The product of its digits is 60, while the sum is 15.

The square root of 1213251 is about 1101.4767360231. The cubic root of 1213251 is about 106.6555728480.

Adding to 1213251 its reverse (1523121), we get a palindrome (2736372).

The spelling of 1213251 in words is "one million, two hundred thirteen thousand, two hundred fifty-one".