201531010 has 8 divisors (see below), whose sum is σ = 362755836. Its totient is φ = 80612400.

The previous prime is 201530941. The next prime is 201531013. The reversal of 201531010 is 10135102.

It can be written as a sum of positive squares in 2 ways, for example, as 177235969 + 24295041 = 13313^2 + 4929^2 .

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

It is a super-2 number, since 2×201531010² = 81229495983240200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201531013) 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, 10076541 + ... + 10076560.

Almost surely, 2^201531010 is an apocalyptic number.

201531010 is a deficient number, since it is larger than the sum of its proper divisors (161224826).

201531010 is a wasteful number, since it uses less digits than its factorization.

201531010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20153108.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 201531010 is about 14196.1618052205. The cubic root of 201531010 is about 586.2919895124.

Adding to 201531010 its reverse (10135102), we get a palindrome (211666112).

The spelling of 201531010 in words is "two hundred one million, five hundred thirty-one thousand, ten".