131613630 has 64 divisors (see below), whose sum is σ = 324725760. Its totient is φ = 34123904.

The previous prime is 131613619. The next prime is 131613673. The reversal of 131613630 is 36316131.

It is a self number, because there is not a number n which added to its sum of digits gives 131613630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379117 + ... + 379463.

It is an arithmetic number, because the mean of its divisors is an integer number (5073840).

Almost surely, 2^131613630 is an apocalyptic number.

131613630 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 131613630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162362880).

131613630 is an abundant number, since it is smaller than the sum of its proper divisors (193112130).

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

131613630 is a wasteful number, since it uses less digits than its factorization.

131613630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 131613630 is about 11472.2983747809. The cubic root of 131613630 is about 508.6670690886.

Adding to 131613630 its reverse (36316131), we get a palindrome (167929761).

The spelling of 131613630 in words is "one hundred thirty-one million, six hundred thirteen thousand, six hundred thirty".