131030220320 has 24 divisors (see below), whose sum is σ = 309558895884. Its totient is φ = 52412088064.

The previous prime is 131030220263. The next prime is 131030220329. The reversal of 131030220320 is 23022030131.

It can be written as a sum of positive squares in 2 ways, for example, as 129533768464 + 1496451856 = 359908^2 + 38684^2 .

It is not an unprimeable number, because it can be changed into a prime (131030220329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409469279 + ... + 409469598.

Almost surely, 2^131030220320 is an apocalyptic number.

131030220320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131030220320 is an abundant number, since it is smaller than the sum of its proper divisors (178528675564).

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

131030220320 is an equidigital number, since it uses as much as digits as its factorization.

131030220320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818938892 (or 818938884 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 131030220320 its reverse (23022030131), we get a palindrome (154052250451).

The spelling of 131030220320 in words is "one hundred thirty-one billion, thirty million, two hundred twenty thousand, three hundred twenty".