131020502 has 12 divisors (see below), whose sum is σ = 201446268. Its totient is φ = 63910800.

The previous prime is 131020501. The next prime is 131020531. The reversal of 131020502 is 205020131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131020501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16124 + ... + 22847.

It is an arithmetic number, because the mean of its divisors is an integer number (16787189).

Almost surely, 2^131020502 is an apocalyptic number.

131020502 is a deficient number, since it is larger than the sum of its proper divisors (70425766).

131020502 is an equidigital number, since it uses as much as digits as its factorization.

131020502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39055 (or 39014 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 131020502 is about 11446.4187412483. The cubic root of 131020502 is about 507.9018012393.

Adding to 131020502 its reverse (205020131), we get a palindrome (336040633).

It can be divided in two parts, 1310 and 20502, that added together give a palindrome (21812).

The spelling of 131020502 in words is "one hundred thirty-one million, twenty thousand, five hundred two".