201651131 has 8 divisors (see below), whose sum is σ = 220496304. Its totient is φ = 182891520.

The previous prime is 201651113. The next prime is 201651139. The reversal of 201651131 is 131156102.

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-201651131 is a prime.

It is a super-2 number, since 2×201651131² = 81326357267158322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201651139) 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, 16406 + ... + 25931.

It is an arithmetic number, because the mean of its divisors is an integer number (27562038).

Almost surely, 2^201651131 is an apocalyptic number.

201651131 is a deficient number, since it is larger than the sum of its proper divisors (18845173).

201651131 is a wasteful number, since it uses less digits than its factorization.

201651131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42781.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 201651131 is about 14200.3919312109. The cubic root of 201651131 is about 586.4084513122.

The spelling of 201651131 in words is "two hundred one million, six hundred fifty-one thousand, one hundred thirty-one".