1310491 has 8 divisors (see below), whose sum is σ = 1613024. Its totient is φ = 1036800.

The previous prime is 1310489. The next prime is 1310509. The reversal of 1310491 is 1940131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 9-Lehmer number, since φ(1310491) divides (1310491-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 1310491 - 2¹ = 1310489 is a prime.

It is a super-2 number, since 2×1310491² = 3434773322162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7110 + ... + 7291.

It is an arithmetic number, because the mean of its divisors is an integer number (201628).

2^1310491 is an apocalyptic number.

1310491 is a deficient number, since it is larger than the sum of its proper divisors (302533).

1310491 is a wasteful number, since it uses less digits than its factorization.

1310491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14421.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1310491 is about 1144.7667884770. The cubic root of 1310491 is about 109.4320867706.

It can be divided in two parts, 13104 and 91, that multiplied together give a square (1192464 = 1092²).

The spelling of 1310491 in words is "one million, three hundred ten thousand, four hundred ninety-one".