131030730 has 64 divisors (see below), whose sum is σ = 369982080. Its totient is φ = 32884992.

The previous prime is 131030723. The next prime is 131030737. The reversal of 131030730 is 37030131.

It is an interprime number because it is at equal distance from previous prime (131030723) and next prime (131030737).

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

It is not an unprimeable number, because it can be changed into a prime (131030737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9684 + ... + 18863.

It is an arithmetic number, because the mean of its divisors is an integer number (5780970).

Almost surely, 2^131030730 is an apocalyptic number.

131030730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131030730 is an abundant number, since it is smaller than the sum of its proper divisors (238951350).

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

131030730 is a wasteful number, since it uses less digits than its factorization.

131030730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28580 (or 28574 counting only the distinct ones).

The product of its (nonzero) digits is 189, while the sum is 18.

The square root of 131030730 is about 11446.8655098241. The cubic root of 131030730 is about 507.9150171975.

Adding to 131030730 its reverse (37030131), we get a palindrome (168060861).

The spelling of 131030730 in words is "one hundred thirty-one million, thirty thousand, seven hundred thirty".