31483321 has 9 divisors (see below), whose sum is σ = 32712399. Its totient is φ = 30299400.

The previous prime is 31483313. The next prime is 31483327. The reversal of 31483321 is 12338413.

The square root of 31483321 is 5611.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 346921 + 31136400 = 589^2 + 5580^2 .

It is not a de Polignac number, because 31483321 - 2³ = 31483313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31483327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 173851 + ... + 174031.

It is an arithmetic number, because the mean of its divisors is an integer number (3634711).

Almost surely, 2^31483321 is an apocalyptic number.

31483321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31483321 is the 5611-st square number.

31483321 is the 2806-th centered octagonal number.

It is an amenable number.

31483321 is a deficient number, since it is larger than the sum of its proper divisors (1229078).

31483321 is an frugal number, since it uses more digits than its factorization.

31483321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 212 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The cubic root of 31483321 is about 315.7622290038.

Multiplying 31483321 by its sum of digits (25), we get a square (787083025 = 28055²).

The spelling of 31483321 in words is "thirty-one million, four hundred eighty-three thousand, three hundred twenty-one".