1313131 has 4 divisors (see below), whose sum is σ = 1390392. Its totient is φ = 1235872.

The previous prime is 1313087. The next prime is 1313141.

It is a happy number.

1313131 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313131 is a prime.

It is a super-2 number, since 2×1313131² = 3448626046322, which contains 22 as substring.

It is a Duffinian number.

1313131 is an undulating number in base 10.

It is not an unprimeable number, because it can be changed into a prime (1313141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38605 + ... + 38638.

It is an arithmetic number, because the mean of its divisors is an integer number (347598).

2^1313131 is an apocalyptic number.

1313131 is a deficient number, since it is larger than the sum of its proper divisors (77261).

1313131 is an equidigital number, since it uses as much as digits as its factorization.

1313131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77260.

The product of its digits is 27, while the sum is 13.

The square root of 1313131 is about 1145.9192816250. The cubic root of 1313131 is about 109.5055215692.

It can be divided in two parts, 1313 and 131, that added together give a square (1444 = 38²).

The spelling of 1313131 in words is "one million, three hundred thirteen thousand, one hundred thirty-one".