131020330 has 32 divisors (see below), whose sum is σ = 276817536. Its totient is φ = 43706304.

The previous prime is 131020301. The next prime is 131020369. The reversal of 131020330 is 33020131.

It is a self number, because there is not a number n which added to its sum of digits gives 131020330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22704 + ... + 27883.

It is an arithmetic number, because the mean of its divisors is an integer number (8650548).

Almost surely, 2^131020330 is an apocalyptic number.

131020330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131020330 is an abundant number, since it is smaller than the sum of its proper divisors (145797206).

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

131020330 is a wasteful number, since it uses less digits than its factorization.

131020330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50638.

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

The square root of 131020330 is about 11446.4112279788. The cubic root of 131020330 is about 507.9015789861.

Adding to 131020330 its reverse (33020131), we get a palindrome (164040461).

The spelling of 131020330 in words is "one hundred thirty-one million, twenty thousand, three hundred thirty".