201156023 has 8 divisors (see below), whose sum is σ = 202718400. Its totient is φ = 199600128.

The previous prime is 201156017. The next prime is 201156029. The reversal of 201156023 is 320651102.

It is an interprime number because it is at equal distance from previous prime (201156017) and next prime (201156029).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201156023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201155986 and 201156004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201156029) 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, 73463 + ... + 76151.

It is an arithmetic number, because the mean of its divisors is an integer number (25339800).

Almost surely, 2^201156023 is an apocalyptic number.

201156023 is a deficient number, since it is larger than the sum of its proper divisors (1562377).

201156023 is a wasteful number, since it uses less digits than its factorization.

201156023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 201156023 is about 14182.9483183152. The cubic root of 201156023 is about 585.9281276031.

The spelling of 201156023 in words is "two hundred one million, one hundred fifty-six thousand, twenty-three".