3149321 has 16 divisors (see below), whose sum is σ = 3883008. Its totient is φ = 2494800.

The previous prime is 3149309. The next prime is 3149339. The reversal of 3149321 is 1239413.

It is not a de Polignac number, because 3149321 - 2¹⁰ = 3148297 is a prime.

It is a super-2 number, since 2×3149321² = 19836445522082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3149381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4676 + ... + 5306.

It is an arithmetic number, because the mean of its divisors is an integer number (242688).

Almost surely, 2^3149321 is an apocalyptic number.

3149321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3149321 is a deficient number, since it is larger than the sum of its proper divisors (733687).

3149321 is a wasteful number, since it uses less digits than its factorization.

3149321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its digits is 648, while the sum is 23.

The square root of 3149321 is about 1774.6326380409. The cubic root of 3149321 is about 146.5791873880.

The spelling of 3149321 in words is "three million, one hundred forty-nine thousand, three hundred twenty-one".