201043031154 has 64 divisors (see below), whose sum is σ = 484682880000. Its totient is φ = 54308501568.

The previous prime is 201043031153. The next prime is 201043031221. The reversal of 201043031154 is 451130340102.

It is a happy number.

It is a super-3 number, since 3×201043031154³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (201043031153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145764 + ... + 650640.

It is an arithmetic number, because the mean of its divisors is an integer number (7573170000).

Almost surely, 2^201043031154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201043031154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242341440000).

201043031154 is an abundant number, since it is smaller than the sum of its proper divisors (283639848846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201043031154 is a wasteful number, since it uses less digits than its factorization.

201043031154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505407.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 201043031154 its reverse (451130340102), we get a palindrome (652173371256).

The spelling of 201043031154 in words is "two hundred one billion, forty-three million, thirty-one thousand, one hundred fifty-four".