201531158 has 16 divisors (see below), whose sum is σ = 323253504. Its totient is φ = 93897600.

The previous prime is 201531151. The next prime is 201531181. The reversal of 201531158 is 851135102.

It is a happy number.

It is a super-2 number, since 2×201531158² = 81229615289641928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201531151) 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, 25910 + ... + 32777.

It is an arithmetic number, because the mean of its divisors is an integer number (20203344).

Almost surely, 2^201531158 is an apocalyptic number.

201531158 is a deficient number, since it is larger than the sum of its proper divisors (121722346).

201531158 is a wasteful number, since it uses less digits than its factorization.

201531158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58807.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 201531158 is about 14196.1670178961. The cubic root of 201531158 is about 586.2921330324.

The spelling of 201531158 in words is "two hundred one million, five hundred thirty-one thousand, one hundred fifty-eight".