130523402 has 8 divisors (see below), whose sum is σ = 196222500. Its totient is φ = 65115904.

The previous prime is 130523381. The next prime is 130523441. The reversal of 130523402 is 204325031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 130210921 + 312481 = 11411^2 + 559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71777 + ... + 73572.

Almost surely, 2^130523402 is an apocalyptic number.

130523402 is a deficient number, since it is larger than the sum of its proper divisors (65699098).

130523402 is a wasteful number, since it uses less digits than its factorization.

130523402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145800.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 130523402 is about 11424.6838905941. The cubic root of 130523402 is about 507.2586500732.

Adding to 130523402 its reverse (204325031), we get a palindrome (334848433).

The spelling of 130523402 in words is "one hundred thirty million, five hundred twenty-three thousand, four hundred two".