1312154 has 4 divisors (see below), whose sum is σ = 1968234. Its totient is φ = 656076.

The previous prime is 1312153. The next prime is 1312169. The reversal of 1312154 is 4512131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1270129 + 42025 = 1127^2 + 205^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1312153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328037 + ... + 328040.

2^1312154 is an apocalyptic number.

1312154 is a deficient number, since it is larger than the sum of its proper divisors (656080).

1312154 is an equidigital number, since it uses as much as digits as its factorization.

1312154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656079.

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

The square root of 1312154 is about 1145.4929070055. The cubic root of 1312154 is about 109.4783566128.

Adding to 1312154 its reverse (4512131), we get a palindrome (5824285).

It can be divided in two parts, 13 and 12154, that added together give a cube (12167 = 23³).

The spelling of 1312154 in words is "one million, three hundred twelve thousand, one hundred fifty-four".