201131004 has 12 divisors (see below), whose sum is σ = 469305704. Its totient is φ = 67043664.

The previous prime is 201130999. The next prime is 201131053. The reversal of 201131004 is 400131102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 16760917 = 201131004 / (2 + 0 + 1 + 1 + 3 + 1 + 0 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8380447 + ... + 8380470.

Almost surely, 2^201131004 is an apocalyptic number.

It is an amenable number.

201131004 is an abundant number, since it is smaller than the sum of its proper divisors (268174700).

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

201131004 is a wasteful number, since it uses less digits than its factorization.

201131004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16760924 (or 16760922 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 201131004 is about 14182.0662810466. The cubic root of 201131004 is about 585.9038347790.

Adding to 201131004 its reverse (400131102), we get a palindrome (601262106).

The spelling of 201131004 in words is "two hundred one million, one hundred thirty-one thousand, four".