31132030 has 16 divisors (see below), whose sum is σ = 56244960. Its totient is φ = 12406752.

The previous prime is 31132027. The next prime is 31132039. The reversal of 31132030 is 3023113.

It is a self number, because there is not a number n which added to its sum of digits gives 31132030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31132039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2850 + ... + 8389.

It is an arithmetic number, because the mean of its divisors is an integer number (3515310).

Almost surely, 2^31132030 is an apocalyptic number.

31132030 is a deficient number, since it is larger than the sum of its proper divisors (25112930).

31132030 is a wasteful number, since it uses less digits than its factorization.

31132030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11523.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 31132030 is about 5579.6084091986. The cubic root of 31132030 is about 314.5834083105.

Adding to 31132030 its reverse (3023113), we get a palindrome (34155143).

The spelling of 31132030 in words is "thirty-one million, one hundred thirty-two thousand, thirty".