131002530 has 64 divisors (see below), whose sum is σ = 332467200. Its totient is φ = 32944320.

The previous prime is 131002523. The next prime is 131002567. The reversal of 131002530 is 35200131.

131002530 = T₆₈ + T₆₉ + ... + T₉₂₂.

It is a happy number.

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

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, 176901 + ... + 177639.

It is an arithmetic number, because the mean of its divisors is an integer number (5194800).

Almost surely, 2^131002530 is an apocalyptic number.

131002530 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 131002530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166233600).

131002530 is an abundant number, since it is smaller than the sum of its proper divisors (201464670).

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

131002530 is a wasteful number, since it uses less digits than its factorization.

131002530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 131002530 is about 11445.6336652891. The cubic root of 131002530 is about 507.8785773203.

Adding to 131002530 its reverse (35200131), we get a palindrome (166202661).

The spelling of 131002530 in words is "one hundred thirty-one million, two thousand, five hundred thirty".