201657130 has 8 divisors (see below), whose sum is σ = 362982852. Its totient is φ = 80662848.

The previous prime is 201657109. The next prime is 201657133. The reversal of 201657130 is 31756102.

It can be written as a sum of positive squares in 2 ways, for example, as 201044041 + 613089 = 14179^2 + 783^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 201657095 and 201657104.

It is not an unprimeable number, because it can be changed into a prime (201657133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10082847 + ... + 10082866.

Almost surely, 2^201657130 is an apocalyptic number.

201657130 is a deficient number, since it is larger than the sum of its proper divisors (161325722).

201657130 is a wasteful number, since it uses less digits than its factorization.

201657130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20165720.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 201657130 is about 14200.6031562043. The cubic root of 201657130 is about 586.4142663542.

The spelling of 201657130 in words is "two hundred one million, six hundred fifty-seven thousand, one hundred thirty".