131020002 has 48 divisors (see below), whose sum is σ = 291638880. Its totient is φ = 42494976.

The previous prime is 131019979. The next prime is 131020007. The reversal of 131020002 is 200020131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (131020007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113058 + ... + 114210.

It is an arithmetic number, because the mean of its divisors is an integer number (6075810).

Almost surely, 2^131020002 is an apocalyptic number.

131020002 is an abundant number, since it is smaller than the sum of its proper divisors (160618878).

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

131020002 is a wasteful number, since it uses less digits than its factorization.

131020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327 (or 1324 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 131020002 is about 11446.3969003351. The cubic root of 131020002 is about 507.9011551540.

Adding to 131020002 its reverse (200020131), we get a palindrome (331040133).

It can be divided in two parts, 1310 and 20002, that added together give a palindrome (21312).

The spelling of 131020002 in words is "one hundred thirty-one million, twenty thousand, two".