131031330 has 64 divisors (see below), whose sum is σ = 322358400. Its totient is φ = 34076160.

The previous prime is 131031301. The next prime is 131031337. The reversal of 131031330 is 33130131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (131031337) 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, 320166 + ... + 320574.

It is an arithmetic number, because the mean of its divisors is an integer number (5036850).

Almost surely, 2^131031330 is an apocalyptic number.

131031330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131031330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161179200).

131031330 is an abundant number, since it is smaller than the sum of its proper divisors (191327070).

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

131031330 is a wasteful number, since it uses less digits than its factorization.

131031330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659.

The product of its (nonzero) digits is 81, while the sum is 15.

The square root of 131031330 is about 11446.8917178420. The cubic root of 131031330 is about 507.9157924572.

Adding to 131031330 its reverse (33130131), we get a palindrome (164161461).

It can be divided in two parts, 1310 and 31330, that added together give a triangular number (32640 = T₂₅₅).

The spelling of 131031330 in words is "one hundred thirty-one million, thirty-one thousand, three hundred thirty".