31483530 has 96 divisors (see below), whose sum is σ = 89631360. Its totient is φ = 7620480.

The previous prime is 31483493. The next prime is 31483547. The reversal of 31483530 is 3538413.

It is a happy number.

It is a super-2 number, since 2×31483530² = 1982425322521800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31483494 and 31483503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82881 + ... + 83259.

It is an arithmetic number, because the mean of its divisors is an integer number (933660).

Almost surely, 2^31483530 is an apocalyptic number.

31483530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31483530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44815680).

31483530 is an abundant number, since it is smaller than the sum of its proper divisors (58147830).

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

31483530 is a wasteful number, since it uses less digits than its factorization.

31483530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 31483530 is about 5611.0186241003. The cubic root of 31483530 is about 315.7629277247.

The spelling of 31483530 in words is "thirty-one million, four hundred eighty-three thousand, five hundred thirty".