1311654 has 16 divisors (see below), whose sum is σ = 2661120. Its totient is φ = 430920.

The previous prime is 1311643. The next prime is 1311689. The reversal of 1311654 is 4561131.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114 + ... + 1965.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

2^1311654 is an apocalyptic number.

1311654 is an abundant number, since it is smaller than the sum of its proper divisors (1349466).

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

1311654 is a wasteful number, since it uses less digits than its factorization.

1311654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155.

The product of its digits is 360, while the sum is 21.

The square root of 1311654 is about 1145.2746395516. The cubic root of 1311654 is about 109.4644491668.

Adding to 1311654 its reverse (4561131), we get a palindrome (5872785).

It can be divided in two parts, 1 and 311654, that added together give a triangular number (311655 = T₇₈₉).

The spelling of 1311654 in words is "one million, three hundred eleven thousand, six hundred fifty-four".