201231201130 has 16 divisors (see below), whose sum is σ = 365802462504. Its totient is φ = 79695524800.

The previous prime is 201231201103. The next prime is 201231201133. The reversal of 201231201130 is 31102132102.

It can be written as a sum of positive squares in 4 ways, for example, as 188773739361 + 12457461769 = 434481^2 + 111613^2 .

It is not an unprimeable number, because it can be changed into a prime (201231201133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99618397 + ... + 99620416.

Almost surely, 2^201231201130 is an apocalyptic number.

201231201130 is a deficient number, since it is larger than the sum of its proper divisors (164571261374).

201231201130 is a wasteful number, since it uses less digits than its factorization.

201231201130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199238921.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 201231201130 its reverse (31102132102), we get a palindrome (232333333232).

The spelling of 201231201130 in words is "two hundred one billion, two hundred thirty-one million, two hundred one thousand, one hundred thirty".