201031340 has 24 divisors (see below), whose sum is σ = 422438352. Its totient is φ = 80360640.

The previous prime is 201031319. The next prime is 201031351. The reversal of 201031340 is 43130102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49175 + ... + 53105.

It is an arithmetic number, because the mean of its divisors is an integer number (17601598).

Almost surely, 2^201031340 is an apocalyptic number.

201031340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201031340 is an abundant number, since it is smaller than the sum of its proper divisors (221407012).

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

201031340 is a wasteful number, since it uses less digits than its factorization.

201031340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6497 (or 6495 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 201031340 is about 14178.5521122574. The cubic root of 201031340 is about 585.8070435231.

Subtracting from 201031340 its sum of digits (14), we obtain a triangular number (201031326 = T₂₀₀₅₁).

Adding to 201031340 its reverse (43130102), we get a palindrome (244161442).

The spelling of 201031340 in words is "two hundred one million, thirty-one thousand, three hundred forty".