201131254 has 4 divisors (see below), whose sum is σ = 301696884. Its totient is φ = 100565626.

The previous prime is 201131219. The next prime is 201131257. The reversal of 201131254 is 452131102.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×201131254² = 80907562671225032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201131257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50282812 + ... + 50282815.

It is an arithmetic number, because the mean of its divisors is an integer number (75424221).

Almost surely, 2^201131254 is an apocalyptic number.

201131254 is a deficient number, since it is larger than the sum of its proper divisors (100565630).

201131254 is a wasteful number, since it uses less digits than its factorization.

201131254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100565629.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 201131254 is about 14182.0750949923. The cubic root of 201131254 is about 585.9040775328.

Adding to 201131254 its reverse (452131102), we get a palindrome (653262356).

The spelling of 201131254 in words is "two hundred one million, one hundred thirty-one thousand, two hundred fifty-four".