31141530 has 64 divisors (see below), whose sum is σ = 94913280. Its totient is φ = 7117632.

The previous prime is 31141529. The next prime is 31141547. The reversal of 31141530 is 3514113.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6349 + ... + 10128.

It is an arithmetic number, because the mean of its divisors is an integer number (1483020).

Almost surely, 2^31141530 is an apocalyptic number.

31141530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31141530 is an abundant number, since it is smaller than the sum of its proper divisors (63771750).

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

31141530 is a wasteful number, since it uses less digits than its factorization.

31141530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16500 (or 16494 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 31141530 is about 5580.4596584869. The cubic root of 31141530 is about 314.6154036376.

Adding to 31141530 its reverse (3514113), we get a palindrome (34655643).

The spelling of 31141530 in words is "thirty-one million, one hundred forty-one thousand, five hundred thirty".